LUVOIR5thFace-to-FaceSTDTMeeting

Caltech,PasadenaCAJuly31–Aug2,2017Talkslidesavailableathttp://asd.gsfc.nasa.gov/luvoir/events/

TableofContents

High-LevelMeetingSummary.................................................................................................2Day1(MondayJuly31,afternoon)..................................................................................................2Day2(TuesdayAug1)......................................................................................................................3Day3(WednesdayAug2,jointwithHabExSTDT)............................................................................4

DetailedMinutes....................................................................................................................5Day1(MondayJuly31,afternoon)..................................................................................................5

UpdateonArchitectureADesignProcess..........................................................................................6POLLUXupdate.................................................................................................................................11Overviewofinterimreport...............................................................................................................12CosmicOriginsreportupdate...........................................................................................................16ExoplanetsandSolarSystemreportupdate.....................................................................................18DesignandTechnologyreportupdate..............................................................................................21Communicationsdiscussion..............................................................................................................21

Day2(TuesdayAug1)....................................................................................................................26InternationalinterestinadditionalLUVOIRinstruments..................................................................26Assessingthesciencereturn:DRMDiscussion.................................................................................29Technologydevelopmentandsub-orbitalpayloads.........................................................................30Exoplanets&SolarSystemDRMsplintersession.............................................................................34COR&PCOSDRMsplintersession....................................................................................................44Exoplanets&SolarSysteminterimreportsplintersession..............................................................45COR&PCOSinterimreportsplintersession.....................................................................................56Design&Technologyinterimreportsplintersession.......................................................................56PreparingforArchitectureB.............................................................................................................56

Day3(WednesdayAug2,jointwithHabExSTDT)..........................................................................65Jointmeetingintro............................................................................................................................65LUVOIRstatus:Science.....................................................................................................................67LUVOIRstatus:Architecture..............................................................................................................68HabExstatus:Science........................................................................................................................69HabExstatus:Architecture................................................................................................................70Commontechnologies......................................................................................................................72HabEx-LUVOIRcommondetectorbriefingandupdate....................................................................72Low-orderwavefrontsensing...........................................................................................................73LUVOIRandHabExcommontech.....................................................................................................73Exoplanetsplintersession.................................................................................................................75Generalastrophysicssplintersessionsummary...............................................................................87

SolarSystemsplintersessionsummary............................................................................................87Exoplanetsplintersessionsummary.................................................................................................88Techsplintersessionsummary.........................................................................................................89Wrap-updiscussion...........................................................................................................................89

High-LevelMeetingSummary

Day1(MondayJuly31,afternoon)WekickedoffwithwelcomesfromJeffBooth(JPL)andtheSTDTchairs.MattBolcargaveanupdatefromtheengineeringteamonLUVOIRArchitectureA(15-mdiametertelescope).Furtherinformationappearsbelowinthe“DetailedMinutes”section.ThebulkofthedesignworkforArchitectureAiscomplete.Thetelescopeandthreeofthefourinstruments(CoronagraphA,LUMOSA,andHDI)havebeenthroughtheGSFCInstrumentDesignLabprocess.ThespacecraftandsunshieldweredesignedduringtheMissionDesignLab(MDL)run,whichcapsacompletemissiondesignstudy.Thefourthinstrument(POLLUX)isbeingdesignedinEurope;progressisbeingmadeandthefinaldesignwillbedeliveredintimefortheFinalReport.Afewremainingblackboxeswillbefilledinthecomingmonths.Tofacilitatethis,specificationsforthefiber-fedspectrographswithinthecoronagraphneedtobesetbytheExoplanetsWorkingGroupsoon.WethenheardabriefupdateonthePOLLUXspectropolarimeterfromCo-PIJean-ClaudeBouretofLaboratoired‘AstrophysiquedeMarseille.WethenproceededwithupdatesontheInterimReport.AkiRobergepresentedestimatedpagecounts(seeTable1).Thetotal(~180pages)ismorethanwe’dplannedattheAprilSTDTmeeting(~150pages).Suggestionsforkeepingthereportlengthundercontrolincluded1)puttinghigh-levelmotivationsintheIntroduction,2)tryingtostreamlineeachsection,3)movingmanydetailsintothe“FurtherLUVOIRScienceCases”appendix,and4)utilizingoutsidereports(e.g.theExoPAGSAG15report)andpublishedpapers.Therewasadiscussionontheoverallphilosophyforthereportanditsintendedaudience.WeexpectthatthehardwarechapterswillexpandintheFinalReport,whilehopefullythesciencechapterswillbelargelycompleteaftertheInterimReport.Forreviewofthescience Figure1:Wordcloudfor5thLUVOIRSTDTmeeting.

contentinbothreports,wewillrelyontheLUVOIRSeniorAdvisorsGroup.NASAHQwillonlyreview“implementation”andprovidefeedbackaftertheInterimReport.WethenheardupdatesfromJohnO’MearaontheCosmicOriginschapters(5,6,&7),MarkMarleyontheExoplanet&SolarSystemchapters(3&4),andMattBolcaronthedesignandtechnologychapters(9,10,&11).ThegoalistohavethebulkofthetextinhandtotheleadsbyaroundAug15.Atthatpoint,wewillneedtomovethereportdraftfromGoogleDocs(orwhateverfilesharingsystem)toaWordfile.Thenonlyalimitednumberofpeoplewillinteractwiththedocument.Nextcamealengthycommunicationsandgraphicsdiscussion.Wehaveanumberofresourcesforgeneratinghigh-qualityscienceandtechnicalgraphics.PleasestartmakingsketchesandsendingthemtoShawnD-G.Furthermore,sincethisisthe21stcentury,thereportscanbe“multi-media”documentswithembeddedvideographics(orlinkstovideos).PlansfortheJan2018AASmeetingwerediscussed.Currentideaistwosplintermeetingsduringthemainmeeting:onewithtalksandonewithhands-onworkwithsimulationtools.WedidatoolssplinteratthelastwinterAAS,butthistime,wewanttogetmoreoutofit(capturepeople’swork).JasonTumlinsondemonstratedthecurrentversionsoftheonlinesimulationtools,whichcannowsaveandrestorethesettingsandresultsofacalculation.Wewouldalsoliketodevelopawebformtocapturetextonpeople’ssciencecases(forusein“FurtherScienceCases”appendix).Shawnshowedthecurrentversionofthenew,mobile-friendlyLUVOIRpublicwebsite.TheplanistofinalizeitbySept.1.WethenwrappedupthemeetingforthedayandwentoutforsomereallygoodMexicanfood(thankstoLeonidasMoustakisforarrangingthat).

Day2(TuesdayAug1)

Table1:EstimatedandpreliminarypagecountsforInterimReportChapter Title Pages1 Exec.Summary 22 Introduction 103 Istherelifeelsewhere? 204 Areweunusual? 205 Cosmology,largescalestructure,anddarkmatter 156 Galaxiesandgalaxyevolution 157 Stars,stellarevolution,andthelocaluniverse 158 Howdoestheuniversework? 59 TheLUVOIRobservatoryarchitecture 1510 TheLUVOIRtelescopeandinstruments 2511 POLLUX 2012 LUVOIRtechnologydevelopment 1513 LUVOIRCycle1 3 TOTAL 180Appx.A FurtherLUVOIRsciencecases Appx.B SciencesimulationdetailsandDRMs Appx.C Detailedtechnicalresults Appx.D AdditionalLUVOIRinstrumentconcepts

TheseconddaykickedoffwithdiscussionaboutinternationalinterestinadditionalLUVOIRinstrumentstudies(expressedbyJAXAandtheSwissSpaceOffice).Allagreethatmoreinterestisgreat.Akipresentedasuggestedscenariotocaptureadditionalinstrumentideaswhiledealingwithafewcomplications/concerns(seepresentationslides).Insum,we’lladdanotherappendixfor“AdditionalLUVOIRInstrumentConcepts”fornewideasatwhateverlevelofmaturity(fromafewparagraphstoactualstudies).Theengineeringteamcanprovidetelescopeparametersandmass,power,&volumeallocationstoanygroupthatwantsthem.ThePOLLUXinstrumentstudywillstayinthemainreport.NointernationalinstrumentswillbecostedbyAerospaceaspartofthisstudy.Therewasgeneralagreementthatthiswasagoodsolution.ThenwemovedontoapresentationfromAkiaboutDesignReferenceMissions(DRMs).Theseare“meanttoprovidequantitativerackupoftotalsciencecasethatcanbeachievedwithplannedhardwareunderrealisticconditions”.DRMsareoneofthefewthingsthatwearerequiredtodelivertoNASAHQwiththeFinalReport.Inprinciple,theyarestraightforward.Inpractice,DRMsvaryalotincomprehensivenessandlevelofdetail.Afewexampleswereshown(TPF-C,HORUS,Exo-S).ForthepurposesoftheLUVOIRstudy,wehaveadoptedaprimemissiondurationof5years(with10yearsofconsumables).Accurateobservationoverheadsarealwaysdifficulttodetermineatsuchandearlystage;we’lllikelyadoptreasonablepercentagesontheexposuretimes.Finally,it’snotfeasibleforustodocompleteDRMsforeverysciencecase.Ideally,we’llhaveDRMsforeverymajorsciencecase(thesignaturesciencequestions)andthenleavesomepercentageofthe5yearsunassigned(“opentime”foradditionalscienceinvestigations).DebraFischerthenledaninterestingdiscussionofLUVOIRtechnologydevelopmentwithcubesats(andothersmallmissions).TherewasgeneralagreementthatwhilenoteveryLUVOIRtechnologychallengecanbeaddressedthisway,somecertainlycan.AparticularlypromisingareaseemstobeUVcoatings.Wethenwentintotwosplintersessions(COR&PCOS,EXO&SS)tostartdefiningthecalculationswe’llneedtodo.Afterlunch,wewentintosplintersessionsonInterimReportwriting(EXO&SS,COR&PCOS,Design&Tech).WeendedthedaywithapresentationbyMattBolcaroninitialdecisionsforLUVOIRArchitectureB(designruntobegininthefall).TheoriginallyplannedinstrumentcomplementonArchitectureB(CoronagraphB,LUMOSB,ONIRS)didn’tincludeacamerathatcouldbeusedforguiding.We’llneedtoincorporatethatcapabilityintooneoftheinstruments,therebyalsorecapturingsomeoftheHDIscience.WhichinstrumentisTBD.TherewasaphilosophicaldiscussionaboutwhetherArchitectureBshouldbeascaled-downversionofArchitectureAoradistinctlydifferentfacility.Therewasageneralconsensusforthelatteroption.Finally,thedecisionwasmadetostudyaRitchey-Chretien(RC)telescopeforArchitectureB(theArchitectureAtelescopeisaTMA).

Day3(WednesdayAug2,jointwithHabExSTDT)ThejointmeetingdaywiththeHabExSTDTkickedoffwithwelcomesandindividualintroductions.WethenheardstatusreportsonLUVOIRscience(DebraFischer)anddesign(Aki

Roberge),followedbysimilarpresentationsonHabEx(ScottGaudiandKeithWarfield).OnehighlightfromtheLUVOIRdesignpresentationthatwasn’tmentionedintheprevioustwodays…duringtheMissionDesignLabrun,apreliminaryanalysisofwhetherwecantipLUVOIRtowardstheSunwasdone.Itappearspossible,andmayallowthefacilitytoviewVenus.NextRhondaMorganandMattBolcarledapresentationsessiononCommonTechnologies.Weheardseparatepresentationsoncommondetectortechnologiesandlow-orderwavefrontsensing(partofWFIRSTtechdevelopment).MattBolcarthenspokeonLUVOIRtelescopesegmentphasing.Hethenpresentedthoughtsonwhatweshouldbedoingaboutourcommontechnologies.Basically,despitecommonsciencegoals,thetechnologicalsolutionschosendifferbetweenthetwomissions.Hesuggestedthatweshouldidentifythesharedperformanceparameters,establishcommondefinitions,andunderstanddivergencesinrequirements.Wethenbrokeforlunch.Afterlunch,wewentintothreesplintersessions(EXO,Astro&SolarSystem,Tech),followedbysplintersessionreports.DetailednotesontheEXOsessionareavailablebelow.TherewasagreementontheEta_EarthvaluestouseforDRMcalculations(bestguess25%,conservativevalue10%).Forotherplanets,theExoPAGSAG13definitionsandoccurrencerateswillbeadopted.TheHabExteamhasjustbegundevelopingtheirSolarSystemsciencecase,butfromthediscussion,itappearsthereareanumberofpromisingareas.Finally,weendedthemeetingwithabriefwrap-upincludingnextsteps.

DetailedMinutesCourtesyofGiadaArney

Day1(MondayJuly31,afternoon)JeffBooth:Introductoryremarks.WelcometoPasadenaagain.“IthinkLUVOIRiscertainlyrevolutionaryandmaybetwostepsawayfromimplementation.”“OnbehalfofJPLandcampuswe’rereallyhappyyou’rehere.”(everyoneintroducesthemselvesaroundtheroom)(soundfeedbackiscausingissues)JohnO’Meara:LUVOIRbroughttoyoubySkrillex.DebraFischer:Introremarks.Welcomeseveryone.BradPeterson:Thisisthemeetingwhereitreallystartstohappen.Whatwedonowandnextmeetingwillreallyformbasicskeletonofwhitepaper.John:ThankstoDoctorBolcarforreturningfromhishoneymoonrecently(applause)

Update on Architecture A Design Process MattBolcarAtthispointsinceArchitectureAmoreorlessfinished,Iwillgothroughentirethingfrombeginningtoendbutalsoshowstuffwe’vedonesincebasicallythebeginning.Iwanttothankthepeoplewho’vebeendoingworkonthisatGoddard.(showsslideofnamesofGSFCpeoplewhohaveworkedontheengineering).

• Threemirroranistigmatdesignwithfinesteeringmirror• InstantaneousFOV15x8arcmin• Nominalfieldofregardanti-sunhemisphere• Al+LiF+thinprotectivecoating.Al+LiFhighTRLandwell-understood.• 270Koperatingtemperaturewithpassivelycooledfocalplanes~70K

MarcPostman:TRLofgimble?Matt:aboutTRL6.Engineeringeffortofdesign.Nothingaboutitthatisscaryornew.

• HDI:• modifiedbackofHDIpickoffmirrorlocationintelescopeFOV• HDI2channelimaginginstrument:UV/Vis(200nm–about1um).Diffractionlimited

performanceat500nm.• NIRimager(1–2.5um)• Switchchannelswithchannelselectmechanism

LeonidasMoustikas:Howdoyouswitchbetweendifferentchannels?Matt:Wheelinmiddleischannelselectmechanism.OneletslighttoNIRmechanism.OnereflectslighttoVISchannel.Otherarediarchicbeamsplittersbutnotatfullthroughputorbandpassforeither.Socando100%foreither,orlessthan100%forbothatonce.

• 52UVISfiltersMarc:Solarsystemcolleagueshappywithfilters?BritneySchmidt:Yesthoseprettygood!AkiRoberge:Thespecificfilterscanchangelater.Wewantedtomakesuretherewereenoughfilterslots,addedfilterwheelsjustforSS.Britney:Supercool.Aki:Yeahweordereduponfilters.

Walt:Yes!Marc:Whatisfiltersize?Matt:Individualfilters130mm.Matt:Nowontocoronagraph.IthinkIDLteamstillhavingnightmaresaboutit…!

• Coronagraph:• UV(200–400nm)imagingonly• VIS(200-850nm)imagingandspectroscopy• NIR(850–2.5um)imagingandspectroscopy• Eachhas15%bandpassfilters.Also2%bandsforwavefrontcontrol.• Eachchannelhas2deformablemirrors• Spectrometersnotdesignedindetail;stillblackboxes;notdifficulttodesign;not

difficulttofitintothevolume• Whileobservingintwochannels,usethirdchannelaswavefrontsensing• “Coronagraphisextraordinarydenseinstrument”• tofitallmechanisms,hadtoincreaseangleofincidenceonsomemirrors• UVhas8masks(overlappingIWASandOWAstogivefullcoverageoverfullband).VIS

has9masks.NIRhas11masks.• Filters:29inUV,29inVIS,37inNIR.(!)Allhavematching2%wavefrontbands.• Forprimarydarkholediggingbigmatrixinversion.10xVirtex-5FPGAsforthis.

JasonTumlinson:Thiscomputerinsidecoronagraph?Matt:Itisaboxinsidethecoronagraph?Jason:Doesitneedtobedoingthiswavefrontsensingcontrolallthetime?Matt:Whennotdoingwavefrontsensingstillmanagingprimarymirror,takingdatafromHDI,generatingpointcommands.Jason:Movingdataeveninsidecanbehard.Matt:Electricalarchitecture…wedon’tanticipateanykindof…Allit’ssendingtoCSP….Wedidn’tthinkaboutthat(sorrythisisgarbledIdidn’tgetallofit)

• Lumos:• Didn’tchangeanythingsincelastpresentationonit• Multi-objectspectrographusesmicroshutterarray• TRL4trendingup

• 1800kg!!• Spacecraft:• Petalsunshield

ShawnDomagal-Goldman:Tiptotiphowbigissunshield?Matt:70-somethingmeters.Smallerpetals3meterseach.It’sbig!KarlStapelfeldt:Questionaboutreactionwheels/gyrosMatt:Gyrosspinatconstantspeed.Spinwithtorque.Noisespectrumbetterthanexpectedfrom(missedthis)Jason:JWSTlearnedalotoflessonsaboutpropellant…Matt:Wedon’tusepropellanttanksforslewing.Wehavepropellantformomentumoffloading,etc.Aki:Spacecraftvibrationallyisolatedfromtelescope.Matt:RightnowourprimarydisturbancesisCMGs(?)butweshouldlookattheslosh.(technicaldifficulties.Adobeconnectcrashedforhim.Peopleonlinecannothear)DaveRedding:Stationkeeping?Matt:Yes.Missedwhoaskedthisquestion:Howlongdoesittaketogetthere?Matt:Baseline90days.

• Notionaldayinthelife(generalastro)• Planforparallelobservations

Marc:Datafordownlink?Matt:1Terrabitindatafordownlink.Jason:Don’tskimpondatavolumeanywhere.Youwillalwaysendupwithmorethanyouthink.Matt:Right.Formostpartwe’vebeenprettyconservativeinrightdirectionforthat.Onethinktolookatiscablesacrosspayloadtospacecraft.Spacefibersacrossgimbleneedtobestudied.

Jason:JWSTwentwrongbyassumingtheyknewexactlywhatscienceprogramwilllooklike.Weshouldn’tdothat.Matt:Right.

• BasicideaofobservationsverysimilartoHST.• Somethingswillrequirefixedtime(exoplanets)

John:Orderofmagnitudesizeoftreasury?Matt:Wedidn’tspendalotoftimetryingtodecide.Wejustwantedtohaveguestobserveranddedicated.Aki:Wewantedtomakesuretodesignaspacecraftthatcanexecuteanobservingplan.Thisdayinthelifeisjustforengineers.Matt:Yescompletelycartoonstoshowthingscanhappensimultaneously.Jason:Whenlookingathowlongyoucanspendonapatchofskyallthatfoldsintofieldofregard,whatanglesyouhaveinplay,willfoldinandberelatedtohowoftenyouhavetorevisit.Havingaconcreteprogramwithlimitedcaseslikea1000hourdeepfieldwillbeusefulexercise.Matt:Reasonablydetailedcon-opssomethingweshoulddo.Karl:Betaangle60degrees?Matt:Don’tknowwhatthatis.Karl:Boresightfromsun(?)Matt:Dependsonthingslikewheremoonis.Cantipfurtherbutmightgetmorestraylight.Orwecanmakesunshieldbigger.

• Volumeisgood.ObservatoryfitsintoSLSenvelope.Alittleheavy“LUVOIRneedstogoonabitofadiet”whenyouadd30%margin.Workingonnow.Inlastseveraldayswe’vealreadyshedseveral1000kg.(laughter)I’mnotconcernedaboutmassasthispoint.

• 44.3mt!

Aki:IwasalittlesurprisedthatwecameupagainstmassmarginofSLS.JulieCrooke:Whywedidn’tworryaboutmassduringIDL.

Matt:Lotsofplaceswecanoptimizeformassnow.Cleaningup“little”errorscanhelpreviseourmassdown.Brad:Block2fairing?Matt:Yes.8.4m.Brad:Ipickedupinliterature10mfairing?Matt:Block1Bwith8.4mfairing.Shortandlongversion.Also10mfairing.Wetriedtofitinto8.4mlongtobeconservative.Jason:Thismissionisregardedbymanypeopleintheworldasthetechnicallybiggeststretch.BiggerthanHabEx.Outofeverythingyouwentthrough,what’stheonethingyou’dputattopoflist…?Matt:Holdthatthought!(Bringsuptechnologygaplistslide)Tada!

• Ultrastableopto-mechanicalsystemsisTRL2• Showingallworksatpicometerlevelisbiggestchallenge• SegmentphaseandcontrolTRL3• SegmentedaperturecoronagrapharchitectureTRL3• HighreflectivitybroadbandFUV-NIRmirrorcoatingsTRL3

Dave:MirrorsegmentsatTRL5aredeliverable…that’strueforglass.ButassubsystemIthoughtlowernumber?Matt:Forglass,trueformirrors.ForSicarbidemirrorsthat’strue.InactualdeliverableIcansharewithyou.Finerdetailonindividualpieces.Distinctionbetweenglassandsicarbide.ShoulehNikzad:Highrangedynamicrange.Wehaveotheroptions…(Imissedmostofherquestion)Matt:Deltadopingotherpieceofthat.Idocallthatout.Debra:NowtoanswerJason’squestiondoweknowhowthiscomparestootherstudies?Matt:Idon’thavewithme.QuestionishowdoesthisTRLstackuptoothermissions?Aki:Idon’tknowanswerforWebbbutapauseandlearnIinterpretedtakewaythatfor3of4missions(Lynx,HabEx,LUVOIR)alltechsvariedbutallrackedupaboutsame.OnebigthingTRL2andabunchof3-4s.OSTdifferent.NoTRL2sbutlargernumberofTRL3sand4s.Matt:Theylistedalotofenhancingtechs.Notenabling.Icalloursenabling.

Aki:Lynx,HabEx,LUVOIRallsimilarnumbersintheendMatt:WehaveacompletearchitectureA!Everythingfits!Lotsofanalysistodothough.(applause)Lotstodotoachievestability.GoddardengineeringteamandIDLdoneafantasticjob.GoaltofinalizeAbeendofAugust.BecausethenwetransittoArchitectureBOTEinSeptember.Aki:Dateonslideiswrong!(ShowsAug2018)Matt:YesorelseI’mtakinganextendedvacation(laughter)Jason:Whatisrighttimetolookatnominalplanfortestsequence?Matt:ForINT?WewentintothatinMDL.Wedidsurveyoffacilities.Lookatwhatpointyoustartgettingtoobig.IndustrypartnersgoingtolookatIMTplanforinstrumentsandobservatory.Jason:Happenovernextyear?Questiononcalibrationofscienceinstrumentsfromanindustrypartner.Matt:Wenotionallyputradiometricalcalibrationsystemdotocorrections.LUMOShascalibrationwithshutters.Notyetforcoronagraph.Candotraditionalstellarcalibration.John:Whatdoyouneedfromus?Aki:There’sstufftomorrow.Matt:TomorrowweneedtostarttalkingaboutArchitectureB.Aki:NextJeanClaudegoingtogivePOLLUXupdate.

POLLUX update Jean-ClaudeBouret(LAM)

• Toplevelsciencerequirementso R=120,000(200,000)o 98-290nm;6nmminorderlengtho SNR=10forflux1e-17erg/s/cm2

• FUV:90nm,123nm• MUV119nm,220nm• NUV210nm,390nm• “Calibrationisgoingtobeabigissue”

• Haveestimatesofthroughput.“IT’sreallylow.Especiallywithpolarimetricmode.”2%withthat.6%withoutpolarimetric.

KevinFrance:that’sbetterthanSTIS!Marc:Igatheredfromaperturesizeandhighresthemainseiencecasesarestellarsources?Jean-Claude:Mostlystellarandexoplanetsbutalsoverygoodcasesforcosmology.AlsointerstellarmediumandCGM.Polarimetrymostlyforstellarphysics,exoplanets.Marc:Polarimetercanberemoved?Jean-Claude:YesAki:Wedidn’treallytalkaboutpolarimetrysciencecases.Waltyouhavesomeinsolarsystem?Wejustdidn’tcover.TalktoJeanClaudeplease.WaltHarris:YeahIwill.Jean-Claude:Wehaveagooddocumentsummarizingoursciencecasessofarbasedonhighresandpolarimetry.Aki:Coffeebreaknow!Reconvene2:45.---coffeebreak----

Overview of interim report AkiRobergeAki:Fromlastfacetofacewedecidedtoshootfor150pagesforinterimreport.ForreferencetheExo-Sinterimreportwas77pagesandfinalreportwas150pages.Wehavemoretocoversogoinglongerisok.Weareat180pages.Aretheselimitsfeasible.Debra:Lifeelsewhere20pagesseemslikealottocover.Aki:Lotsofstufftocoverinthere.Solarsystemtoo.Britney:Thisisaproposalphaseandwe’retalkingaboutmotivatingmeasurementsIthinkwecanaffordtobebriefandreferencewellbecausethendeliveringmoreofapunch.Inmissionproposalwehave12pagesforsolarsystemforentirescience.Wehavetodoeverythingin12pages.Aki:That’salotshorterthantypicalastrophysics.

Britney:Truebutthesearethescalesatwhichwehavetodefineconcept.Especiallyifhavingexamplecasesasappendices.Alsowedon’twantittolookoutofbalance.Ifgoingwith15persectionstillprettylong.That’sareviewpaperforeachchapter.Wantpeopletoreadwholething.Pullingout5pagesfromherethereeverywheremighthelp.Julie:Justgoingofffromtypicalproposalsyousubmit,I’mlookingatscience,that’s85-90pagesofsciencebetweenchapters3-8andknowingthattelescopeandinstrumentsandarchitecturesissignificantlysmaller,Ithinkthat’sunbalanced.Aki:Thisisforinterimreport.ForfinalI’mexpectinghardwarechapterstoexpand.MostdefinitelytheyhavetocoverArchitectureB.Asfarasoutofbalanceonscience,itseemsdifferentimpressionsonwhattheyshouldbelike.Astrophysicsonesarelikethis.TPF-Cislikethisbuttwicelength.Debra:Audience?Aki:NASAHQ?Debra:Willthesebepublic?Aki:YesJulie:Philosophicalquestion:LUVOIR’sbiggestproblemisperceptionoffeasibility.Ifweput2-3xasmuchonscience,LUVOIRhasanawesomesciencecaseandeveryonewillacknowledge.Doweneedtoaddmoreto“Isthisfeasible?”Aki:Forfinalreportyes.Techwillobviouslyexpand.Iwaskindofhopingwewouldbeprettydonewithmostofthesciencematerialbeforeit.Polishingforfinalreport.Givenwecanwriteitrightnow,weshould.John:Completelydifferentangleisthatthisisn’tadocumentforHQ.ThisiswhatwebringinJanuaryandslapdowninfrontofwholeastrocommunity.WehaveagoodsciencecasebutIdon’tthinkpeoplebelievethat.Over-performingnowandthencuttingshouldbegoalIfwehavegoldinthesesections,ifwetakethatcommunity,hardforcommunitytorespondthat“youdidn’tthinkaboutXYZ.”HitcommunityhardinJanuary.That’sourbigpartymoment.Havingasstrongandasbigsciencecasewecantoshowthatscienceperdollarisfantastic.That’sperceptionwe’refighting.Iagreeweshouldreferencewell.IntermsofmychargetotheroomIwouldratherwehaveembarrassmentofrichesofhaving30pagesandhavetocutto15.Aki:OnlyguidancefromHQisthatExo-SandExo-Cisamodelandtheyweren’t40pages.Theywerelikethis.

Britney:Igetthat.Weshouldnotgetintoweeds.Somebodyneedstoeditthisforareasofsciencecoveredbutdon’twanttoprescribeallofthesciencebutalsodon’twanttogetintotheweeds.Aki:Iguesswecancomebacktothisafterawhile.Tablethisandthinkaboutforlater.IninterestofnotgettingintoweedsandnotgoingOVER180pages.Highlightmotivationsinintroandnotrepeatinchapters.Shouldtrytostreamlinesections.BekkiandIdidthattoplanetformation-ysection.Movedetailsintoappendix.Weedstoinappendix.Mooni(?):AsfarasinterimreportatHQ,we’renotreviewingscience.Weareinterestedintechroadmaparchitecture,andsomewherewhatyourrisksare.Aki:AsmuchasweKNOWthembutitisaninterimreport.WewillhavealotonAbutlessonB.Mooni:Costinfoisuseful.Ifyouhave.Aki:Maybe.Dave:WhatcanweexpectbackfromHQintermsofresponsetoreport?Clarification?GuidanceonAvsB?Aki:ANYfeedback?MarioPerez:LUVOIRteamwillhavereviewofscienceteambasedonsenioradvisorygroup.HabExhavesame.OSTputtingtogethergrouplikethat.IexpectLynxwillhave.Willbeinterestingforustoseecompliance.Isstoryclear?Implementationissues?Peoplegoingtoreviewalsotheotherreportsaswell.Leadershipofeachmission.Aki:Whowe?Mario:YeahinmanagementplanhavepeoplefromcentersAki:Idon’trememberthispart.Talkaboutlater?Mario:Commentnotonscience.Onimplementation.Aki:Feedbackonsciencecasewerelyonsenioradvisors.Alan[Dressler]isoneofthemoverthere.Iguessformoredesignhardwarestuff?Mario:WesendtoexpertAki:Idon’trememberthisfrompauseandlearn

Julie:Gobacktoallocationpagesplease?Iassumeriskssectionineither9or10or12?Aki:Matt’splanmostlyin12…?Julie:I’lljustsayonelasttime.Ifyouwanttokeepallpagesforscience,butmygeneralfeelingis,well,isMattfinewiththat?Matt:I’mnotdismayedbythis.55pagesforarchitectureandinstrumentandtechisfine.Idon’tseethatbeingtoosmallanumber.Itmayswitchbutasanoverallallocationit’sfine.IfIthinkwewon’tmeetthoselimitswhenfurtheralongI’lltalk.Butrightnowseemsfine.Brad:Theseareself-imposedlimits.Notpagelimits.Guidelines.Targets.Aki:Self-imposedYes.Marc:AsreferenceWFIRSTSDTreportwas320pages.Aki:That’stoolong!Marc:Thatmaybetoolong.Introwas30pages.Sciencewas60pages.Theyspentalotoftimediscussingscienceonanapprovedmission.180notcrazy.Matt:IagreewithAki.Finalreportwillhavemuchlongerdesignandtechsectionbecausecoveringtwoarchitecturesindetailandmorethoroughtechplanbythen.Finalreporteitherequalbalanceoroutweighedinotherdirection.Fornowfine.Aki:Iwasgoingtoflipthroughwhereweareoncurrentoutline.Lotsofpeoplelookedatit.Iwanttomakesurewehaveholisticview.AlreadyoutofdatebecausethismorningdidthingswithPolluxchapter.(showsIsthereLifeElsewherechapter?)Debra:Wedon’twanttolosepeopleinaseaofinfo?Aki:We’realreadytightIthink.Ithinkthisisprettyleanandmean.Debra:I’mgladbalancedre.pagesbetweenexoplanetsandcosmicorigins.Aki:Thatwasonpurpose.Debra:Yes.Aki:Givenpagelimitscan’tspentlongonstateoffieldandsynergiessections.Karlcanyoudoitlikeareportifweneedasection?ExoPAGorPASP?

Shawn:AtleastforexoplanetsciencecasesaremultipleSAGreportsoutinnextcoupleyearsoroutthatwillgothroughalotofthisscienceindetail.Aki:DanielApaiSAGreportcomprehensive.Mustbeshortinmainreport.Ifmoreneedstobesaid,doinothervenue.(showsCosmicOriginschapters)Aki:Idon’tthinkthesehavechangedsincewelastlookedatit.Weaddedphysicsofcosmoschapter.Wewanttoshowwehavealittlesomethingforeverybody.WehadGSFCLISAmeetinglastweek.Ithinkweneedtohelptheminterestinglyenoughtounderstandtheastronomyvalueofdiscoveringthetargetsthey’regoingtodiscover.Alotofthemaren’tastronomers.They’rephysicists.ThetopicofvaryingfundamentalconstantsgoingtobeinPOLLUXchapteranywaybutgoingtomove.(showstelescopeandinstrumentschapters)Aki:Here’stelescopeandallinstruments.Courtney,ONIRSsectioncanbeplans.Canbeshort.POLLUXchapter…pendingapprovalbyscienceteam,canstructurewith3signaturesciencecasesaswell:stellarmagneticfields,planetarysystems,andextragalacticandcosmology.Wemayneedtoaddanotherappendix.Iwilldiscusstomorrow.Julie:Numbersonright?Aki:Pagenumbersincurrentoutline.Meaningless.Questions,comments?Great.

Cosmic Origins report update JohnO’MearaJohn:Ihavenoideahowthiswilllook.Sowhat?(slideslookcrappybecauseoftechnicalissues)John:Thiswillruinallthejokes(switchinglaptops)John:

• CertainthingsonlypossiblewithLUVOIR• Incrementalscienceisnotwhatwewant• WefeltstronglythatlotsofgoodPCOSsciencewillhappenwithLUVOIR.• JointmeetingwithLISAfolksatGoddard.Wetalkedaboutsimilaritiesoftechnical

requirementsandhowwecanworktogetherfortransientobservations.

• Chaptertitles(placeholders):o Chapter5:Howdoescosmicstructuresarise?o TheMicrophysicsofCosmologyo StellarMassLimitsattheExtremeLowEnd(“lovelythingonlyLUVOIRcando”)o Thegalaxyluminosityfunctionattheextremeend

• “Thelowmassenddemandsaperture!”• He’sexcitedaboutaplotshowinghowlongittakestoseedownto34thmagnitude

o “I’llsaythatagain.34thmagnitude!”• Chapter6:Howdoesgalaxiesassemble?

o “DaveSchiminovichifyou’rewatchingIreallyneedyoutoupdatethisfigure!”(figureof10mtelescope)

• Chapter7:Stars,stellarevolution,andthelocaluniverseo Howdostarsform?o Howandinwhatenvironmentsdoplanetsassemble?

• “IweepopenlyeverytimeIseetheAndromedaPHATimage…whenIthinkaboutwecandothisoutthere.”

• JohnhasaslideofDarthVadar“I’mheretoputputbackonschedule.DarthVadar:SithProjectManger.”

• “Iwantkillerfiguresforeverysignaturesciencecaseandcodeusedtogenerate”“Ireallylovethefiguresthattakeallthearchitecturesandsciencecasesandcomparingthose.Statementofwhattelescopescando.”

• “Ifyoudidn’twriteaquicksheet,writeone.”• Calloutboxeswillpepperentiredocument• NeedthingsbyAugust15th

Jason:Ihaveastatement.IfyouneedsomethingintheETCsthatisn’ttheretellme.It’seasytoadd.Brad:Allfilters?Jason:No.Notyet.Marc:CodewillallowHDI.Helimitednumberofknobs.Brad:Iwanttoclarifythesearedonewithrealestimatesofthroughputs.LUMOSuptodatewithresultsofIDLrun.ForHDIwestillneedtoputinzeropoints.StillworkingtogetONIRSETC.GiadaArney:Pleaselookatcoronagraphandprovidecomments.Dropdownfor9and15mwithpresetsforthosetwo,includingsettingsthatcameoutofIDL.Brad:Inscribedcirclesincluded?

Giada:Yes.Aki:MostlycompletedraftsbyAug15wouldbegreat.

Exoplanets and Solar System report update MarkMarley

• (moretechnicalissues…)• “We’renotasfaralongasweshouldbe.”• Currentlywehave7pagesinChapter3“Thisissignaturescience.Wereallywantto

shine.MostpagesfromChrisStark.”• Chapter4:16pages• Somethingsmovedtoappendix?Oceanandicyworldstoappendix?

Aki:Idon’twanttomoveocean/icyworldstoappendix?Signaturesolarsystemcase.Ifanythingmightbealternativehabitableenvironmentsbit.

• Needtoberobusttodiscoverypipeline• Havinganicefigurewillgoalongwaystowardsexplainingsearch/characterization

strategy• Cloudsinchapter4canbemovedtoappendix?• Needhighqualityfigures,notjusttext• “Spendtimemakingthekillerfigures”• regularteleconsneededtospurprogress?• August=timetogettextdeveloped

OlivierGuyon:Infographicsthatexplainprocess…it’snotjustinfographics.Wedon’thavetheSTORYwelldeveloped.Morethanjustgraphics.Aki:Ithinkwehavesenseinourheadsbutnotwrittendown.Invertedpyramidofeasyobservationstohardones.Besttargetsfilterdowntonexthardestthing.Filterdownbestplanets.Olivier:Complicatedstory.Toolsoverlap.Explainingoverlapishard.Mark:Qualitativelyweunderstand.Howtodo?Wedon’thaveIFS.Whataboutif3-4dotsinsystem?Howdoweknowwehavesameplanetifmoves?Lotsdevilsindetail.Aki:HowweknowifsameplanetornotproblemforIFSorfibers.Olivier:Howdowefoldinnon-LUVOIRmeasurements?RV,astrometry.Weakersciencecasethanifwetakeamorecomprehensivelook.Marc:HighprecisionastrometrymodeLUVOIR-onlycapability.Makesureyouhavethat.

Aki:Wewilltalkaboutvalueofmassmeasurementforatmospheremodeling.Idon’tthinkwewereplanningtouseastrometryfordiscovery.Notmoreefficientthatjuststraightshotwithcoronagraphimager.Probablyisn’t.Olivier:Ithinkwe’reinterestedinthischaptertalkingaboutplanetswe’llgetspectrafor.Notinterestedinplanetsforwhichwecan’tdothat.Wecanassumewe’lldoalldetectionswithcoronagraph.Don’tneedtoconsiderplanetdiscoveredbyothertechniquesLUVOIRcan’tsee.Dave:Curioustoknowhowmuchoverlapbetweenscientificdiscussionandinstrumentdiscussion?Aswegothroughlogisticsofwritinghowwe’regoingtosplitthatup?Mark:Questionaswewritethese,we’rewritingtoacapability,butnotobservingcase.Wheredowecutthelevel?Aki:Wehavetogofurther.OneofonlythingsHQrequiresisdesignreferencemissions.Iwilltalkabouttomorrow.Mark:Goingthatfarinchapters?Aki:YieldsandresultsfromDRMsshouldappearinmainchapters.E.g.howmanyplanets,howmanyspectra?David:DRMsgroundedinhardwarespecifics.Aki:IntheoryDRMsstraightforward.Inpracticeeveryonedoesdifferently.Olivier:Needtoavoidwritingthingswecan’tdo!Aki:Quantitativeassessmentsneeded.Wewillhavetosayinmainchaptershowmuchwegetwithourhardwareandreasonablemissionoperationsassumptions.DRMisconnectionbetweenscienceandhardware.Dave:Myriadofdetails.Thesearethingsthathavegonethroughdesignlabprocess.Incontextofthisthatyouguyscanmakeclaimsofwhatyoucansee.Groundedinhardwarepartofstory.Mustbecomprehensive.Aki:That’stheidealgasgoalofwhatwe’redoing.SciencesectionsshouldrefertoDRMs.Appendixwillhavealldetailsofcalculations.Resultsneedtobeinmainchapter.MarkMarley:Forforinstancecharacterizingoceanworldsinsolarsystem.What’skillerfigure?Apertureversuswhat?

Aki:Excellenttopicforsplinter.Whatcalculationswillwedotoshowwhatthishardwarecando?Marc:DRMsappearinspecialboxes?Aki:Results,yes.Marc:Givesseparateflavor.Aki:Hardpartisfiguringoutactualcalculations.ChrisyieldstuffisDRM.GoodDRM.Don’thavethatforanyothersciencecase.Needtofigureoutwhatweneedtocalculate.Splintertomorrowwillgetseriousaboutthat.VikkiMeadows(online):Iassumeweneedstructurefromgoalstoobjectivestomeasurementrequirements.DRMcomesbackonmeasurementrequirementsandsayswecandothat.Aki:DRMputsinactualtimes.Worksitalltogetherwithwholerestofmission.Saysifthisisobservationyouneedtodo,youfigureouthowlongittakesandhowlongittakes.Shawn:DRMstartsfromoppositeside.Wedemonstratehowmanyandwhatqualityobservationswecanmaketomeetsciencegoals. Aki:ChrisyieldcalculationsgoodexampleofDRM.Vikki:Wecansynthesizerequirementsfromscienceend.E.g.todetectoxygenyouneedthisintegrationtimeandthisresolution.Mark:Usesimulationtoolsandstartmakingfigures.Vikki:Wedidn’tgoquitetoDRMforExo-C.Aki:WedidsomeofthatforExo-SVikki:Wedidayearinthelife.Wegothatfaraswell?Actualobservingsequence?Aki:Weneedtotalkaboutthistomorrow.Hugevarietyinpossibleapproaches.OnesI’vebeeninvolvedwithallcompletelydifferent.Shawn:Vikkitobeclearweshoulddiscusslogicyoulaidout.Needtoexplainhowwewentfromgoalstorequirements.Vikki:Thankseveryone

Design and Technology report update MattBolcarMatt:Asfaraschaptersondesignandtech,wewillseelotsofprogresssoonbecauseI’msubmittingSPIEpaperssoon!NeedtextonHDIandONIRS.Aki:Courtney,thisisourplans,notdesigns.Matt:IwillfoldtwoSPIEpapersintotheirchaptersandwriteOTEpart.TechisseparateSPIEpaperIwillwriteup.SPIEpapersIwriteupthisandnextweek.Dave:Arewegettingstatusupdatesondevelopmentsincoronagraphdesignandtaskarea?Matt:YoumeanSCDA?Dave:SCDAone.There’swhateverOliviermayhavegoingon.WhateverNeil’sdone.Ihopewecouldgetastatus.Aki:Howaboutinyourtechnologysplinter.Dave:Youallareinvited!Matt:Coronagraphinstrumentchapteriscoronagraph.Techchapterwillreferencealltech.Dave:FolksImentionedpleasegotosplinter.Ifyouhavematerialstoshow,pleaseshow.Aki:Nowwedocommunicationdiscussion.---shortbreak---

Communications discussion DebraFischer/ShawnD-GJohn:ShawnisthattheMakeAdobeConnectAgain?(technicalissues…)Marc:(missedbeginningofthis)LUVOIRdoingsystematicexplorationofeverystarsystemwithin50pcofsun.PutsLUVOIRonmapashabitableworlddiscoverymission.(commentaboutwhatLUVOIRisvswhatHabExis)Debra:IsissueitgetstrickywhenwetalkaboutwhatLUVOIRis,butwhenwestarttodefinewhatHabExis…Shawn:BeforeHDSTandLUVOIRandATLAST,nobodythinkingaboutextrakindofqualityobservationsthatlargeraperturecanenable.Timeresolvedspectroscopy.NotinTPF

Aki:There’sstuffinTPFIdidn’trealize.MoreIntherethanIthought.Theyhitalotwe’rethinkingof.Notinasmuchdetail.Shawn:We’llbemuchbetterthanbefore.WeasLUVOIRnotproperlyemphasizingwhatwecando.BestcaseswhereHabExcangetspectra,wegethighcadencehighresspectra.Olivier:DRMdoesn’thighlightdataquality.Spectralsignaturesthatareweakwecansee.Wavelengthcoverage:LargeraperturefartherinIR.DRMhidesquality,weneedqualityofobsnotjustnumbers.BertrandMennesson:ToanswerMarc’spoint,factthatLUVOIRispresentingitselfasabletodostatisticsimplicitlysaystocancharacterizeindividualplanets.Soyoucaninsistonthataswell.Makethatpointclear.Obvious.Otherthinsthatwe’restartingtolookintowhatkindofdatawecanget.ChrisstartingtosimulatedaysinthelifeofHabEx.Aki:IdeaBekkihadforkeygraphicinplanetformationssectionistomakeupaplanetsystemandidentifyallthethingsthatwemeasureinit.Weshoulddothattoofromexoplanetside.Pointtopointsourcethatpopsuptospectrum.Jason:Noreasonwecan’tdo100planets.Aki:Keygraphicthattriestocapturequalityofobservationsontemplatesystem.Olivier:Lifefindingnoteasy.Willrequirelotsofhighqualitydata.Marc:Sincethisiscommunicationstopic,butyoujustsaidit’sreport.It’s2017,we’rein21stcentury.Canourreportbeanelectronicreportthathasvideographics?E.g.somevideothatdemonstrates100planets?Mostpeopledon’tprintoutthingsthesedays.Debra:PDFscanhavevideosandanimations.Mario:Surewecan.Wecanexplorethat.Aki:That’sfun.Ilikeidea.Shawn:TofollowonwhatOliviersays,weshouldembraceourinnerHabEx.Whatareobservationswecanmakeon5or10besttargets.Howfarindetailcanwego?Debra:Weneedtotalkaboutvideos.GoddardorSTScIwillhelp.Otherthing:I’mcuriouswhetherNASAinterestedinhavingsomekindofparameterspacediagramthatshowswhatOSTwilldetect,whatastrometrycandetect,whatmicrolensingcandetectaswayofcommunicatingdecadalsurvey.Tothatend,Iwonderifthereisworkweneedtodorisk

mitigation.Nottechnical,butaretheresciencethatneedstobedoneandweneedtothinkaboutcomissioning/carryingoutthatwork.Aki:Supplemental/precursorscience?Debra:forastrometrycase,doweneedtorevisitatnanoarcsecprecisionscalehowstellarnoisecontributesfloor?Aki:Idon’tthinkweneednanoarcsecforourpurposes.Debra:ForEarthswedo.Earthat10parsecsis.3microarcsec.Precisionmustbefactorof10better.Somethingtothinkaboutintermsofsupportingcase.‘Olivier:Forastrophysicalnoisefloor,beatentodeath.Onsolidground.Nobigredflag.Don’tseeneedtorevisit.Problemoninstrumentationside.Howdowedemonstratesub-microarcsecondonlargeaperture?Quitenew.Aki:Weshouldliberallyreferencepreviouswork.Debra:Lagrangepaperandothers.Shawn:Otherthingforscience/researchinadvanceofreportsiswe’vetalkedaboutwhatRVandastrometrycando.IalsothinkweshouldthinkaboutwhatkindofsciencewegetjustfromcontinuingbusinessasnormalbyextendingcadenceofRV.MaynotdetectEarthsbutgetinfoonsystemsandthatcaninformLUVOIR.Grayareabetweennothingandeverythingrequiresinvestigation.Aki:TimetostarttalkingaboutplansforAAS?Debra:Goodidea.Twomorequickthings.ShawnandMarkandJohn,dowehavesysteminplaceforeditingreports?Feelsawkwardtometogoinandeditthegoogledocs.Shawn:Sofarlettingleadsforchapterstopickwhateversharingmethodtheywant.MaybewecanuseascommonplatformSlackforteamcommunications.(ShawndemonstratesSlack)Aki:Doesn’tsolveproblemDebraistalkingabout.Shawn:Notcross-teamsimultaneouseditor.Thatsolutionsofarworkedoutindependentlybychapterleads.John:Onlyhalfthepeopleusegithub.Imuchratherinsteadweembracepencilsdowndateforeditsuntilwegettopointofsingleeditor.WhyIputoutAug15thCOR.AfterthatonlyIwillbeediting.

Needmythbustersslideonwhatgroundcanandcan’tdo.Weneedabulletpointonwhygroundcan’tdoX.Debra:Onawesomevsapertureplots,weneedtoalsothinkaboutvideos.Twominutevideos?John:Atmaximum.Don’twanttoolong.John:IhavegrandvisionsforLUVOIRsummaryvideos.Shortthings40secondstoaminutemax.Wantsomethingyoucanquicklyshowpeopleonyourhone.10-30seconds.Debra:Wanttotalkaboutexoplanetmovies?Shawn:Markfirstwanttotalkaboutco-editingexoplanetchapters?Mark:Wehaveasmalluniverseofpeople.Googledocsisfine.Aki:Figuresareannoyingingoogledocs.Pleasedropinfiguresinfolder.Shawn:Googledocsgoodfordrafting,notforfinal.Aki:Willhavetoswitchlater.Julie:WewillhaveaproposalspecialisttodofinalthinginInDesignandproposalgraphicsartist.Youcandrawitonanapkinandfaxorscanitoremailittohim.Mark:Thatneedstobeclear.What’sprotocol?Shawn:There’sfourresourcesatGSFC.TwothingsJuliementioned:peopledoingdocumentediting,secondisinfographicspeople,thirdissciencevisualizationstudio.Theyworkwithdata.IfwewantavisualizationofChrisDRMorbullseyetargetofgalaxies,wecandothosein3Dspace.LastiscalledCILabs.TheyareourLucasArtsstudio.Theydoconceptualanimations.Forinstance,ifyouhavescienceyouwanttoconceptuallyanimation,theydothat.Goodworkflowisifchapterleadstelluswhattheywantassociatedwithreport.BringituptoAki,Debra,Brad,me,Julie.Aki:Whatweneedisconcreteideas,sketchesforgraphics.Shawn:Evenifnotfinalized.Aki:Hacktogetherandsendittous.John:Foreverysignaturesciencecase,doasketch.

Shawn:ThingswehavealreadyfromCILabssideisLUVOIRdeploymentvideo,“beautypasses”atL2.LUVOIRinalightbox.Thesereplacestandardinstrumentslides.Lastthingweorderedisexoplanetcaseanimationandideathereisthechallengeofcharacterizeplanetsbasedonsinglepixelofobservation.Basicallyanimateobservationofexoplanet.Qualityandresolutionimproveovertime.Cartoonofplanetwillshowwhatweknowordon’tknowovertime.Mightstartoffasblob,thensphere,thenspherehasclouds,water,ocean,oxygen,etc.Wewillcartoon-ifythis.GoodifwehadsomethinglikethatfromCORandatleastoneforsolarsystem.Forthoseworkingonthosepartsofreport,figureoutbestsciencecasestovisualize.Brad:STScIhasresourcestouse.Kevin:OnethingthatisauniqueLUVOIRcapabilityisanimatingdayinlifeofphotongoingthroughLUMOS.Somethingneverbeendone.Imagineabunchofbackgroundquasarsgoingthroughgalaxy,goingthrougharray.WedidforSMEXconceptawhileago.Whenbecomesspectrumatendisverynice.CoolthingforCOR.Aki:Doyouhaveatemplate?Kevin:Icanshowoldversion.Wecanupdateandimproveit.Ideatogofromstarfieldtospectrum.Shawn:SendtousandIwillschedulemeetingyoucancallinto.Aki:Oneweabsolutelyneedforinfographicsisoneonobservationalstrategyfrompointsourcestobiosignatures.Thefilter.Thepyramid-likefilter.Coarseonlotsofthings.Mostpromisinggetnextlevel.Shawnyouhaveinyourhead,turnintoinfographic.Shawn:WeneedtoshowwecandodeepdivesANDgetslotsofdata.Mark:Alsoatensionbetweenthatandalsosurvey.Dowebehavedifferentlyifwehaveadvancedinfovsifwedon’t(e.g.masses)Debra:Inadditiontoawesomevsaperture,IlikeideaofastronomybeforevsafterLUVOIR.Jason:(demosLUVOIRtools)Ithoughtitwouldbenicetohaveprettyversionsoftools.NowIhavepresentationmodeversions.Blackbackgroundandprettyfonts.Theseonlinealongsideeverythingelse.Alsoifyouwantanyotherstylingchangesthat’spossible.Iusethisembeddedinkeynote.John:Onlinetoolshowwegofrom20sciencecasesinhandbookto200.Jason:Ifsomeonegivescalculation,wesavetheirparameters.Ifwechangeonethingoronefilter,wedon’thavetorecompute.Wejustchangetelescope.

Shawn:DoesthathelpanswerAASquestion?Aki:Forsplinter.Notionabouttwosplinters:talksandhandsontoolslikelasttime.Thistimewewantmoreoutofit.Wouldbegreattogetmoreoutofit.ThisisawesomeJason.Thankyou.Inadditionweneedawebformforpeoplecanentertheirsciencecasetextinwebformtooandsaveit.Jason:Weshouldhavespentalittletimetoconceptualizewhatitwilllooklike.Lotsofareasofscience,differentinstruments.Wecanuseourstructuretoingestthings.Aki:Webformcouldcapturetext.(Shawndemosnewwebsite)Debra:Datewhenitgoeslive?Shawn:Whenhappywithit!John:CanwesaypencilsdownSept1?Aki:Ithinkso!Debra:Let’sclosemeeting.Thanks!

Day2(TuesdayAug1)

International interest in additional LUVOIR instruments AkiRobergeKevin:dotheyhavetocontributesomethingconcrete?Peoplecontributealotofthings.Theycouldtalkaboutthem,writestatementofinterest?Aki:Handleinawaytomaximizeflexibility.Don’tmesswithcurrentplannedinstruments.Wemakeitclearthatflightsinstrumentswillbechosenafterdecadalandmentionsecondgenerationinstruments.Ialwayshaveaerosospacesittingoverherescaringme.Theywon’tconsideranyinternationalinstrumentsasbaselineandwon’tcostthem.Thiswillgiveusmaximumflexibilityandcapturebenefitofinternationalinterestwithoutscrewinganythingup.

Jason:BradandIrecentlyinLeidenwhichwasattendedbymanyinternationalpeople.Tremendousinterestonpartofagencyofficialsforjoiningthismission.Ithinkweshouldbeaswelcomingaspossibleforalternativeinstrumentconcepts.Shouldwearrangewhetherit’sofficiallyunderLUVOIRauspicesoratarm’slengthtohavemeetingorseriesofteleconstocoordinate?Aki:Wehavetotellthemit’sapossibilitytostartwith.Internationalrepsfirstforsure.Jason:Icanimagineextrahalfdaytackedontofacetoface.Havingopportunitygoodidea.Iwouldaddthatweshouldbeabletosupportadditionalinstrumentconceptswithatooliftheywantit.Institutepayingforthat.Aki:Ifthere’spersonpowertodoit.Jason:Yes.Dave:Secondgenerationinstruments:Isthatreal?Aki:Wearenotdesigningorcostingthem,butweareplanningforserviceability.Dave:Ifweidentifysecondgenerationinstrumentsasfocusforothercountries,weneedtomakeitmoreconcrete.Marc:Ourfourinstrumentsarestrawman.Nobodyshouldbelievethattheyarethefirstgenerationinstrumentsthatforsurewillfly.Dave:Credibilityofclaimofsecondgenerationinstruments?Brad:Ihavetoworkwithagroupcalledfutureassemblyandservicingofsatellitesteam(FASST).WepresentedtoNACsciencecommitteeandhumanexplorationcommittee.STMDalsointerested.Threedirectoratespullinginsamedirection.Dave:OnetogoBrad:Workingonconceptthatdoneedserviceability.Takingitseriously.Yesdoneedmultiplegenerationsofinstruments.Wemightdecidetoflysimplerinstrumenttomakemassmargin.Veryflexible.Aki:GeneralthemeofflexibilityshouldbeemphasizedupfrontinreportJulie:Dave,IwouldaddthattheSTDTselectedthesefourinstrumentstostudyfirstbutIcanimaginedozenormorepossible.Notuptoustodecidewhatthosewillbe.Willbeopencompetitionforinstrumentslater.Ihavenoideabutnotforustodecide.Alsoselectedthesebecausemoststressingcasesonobservatoryaswhole.

Dave:WayforinternationalpartnerpartofcomplementevenifAerospacewon’tcostit?Thisoffershopeforpotentialcollaborators.Butisitreal?Doesthispreventthemfrombeingconsidered?Aki:NoAerospacecostingisjustpartofthisstudy.Dave:Sorealhopeforinternationalpartnerstoprovideinstrument?Aki:Absolutely.John:BiginterestatLeidenmeeting.Needtodoloudlytogetasbigacaptureradiusaswecan.Doitveryloudandembracingaswecan.Tellthemwhatourreportisandwhatitisn’t.Aki:Ontodolistemailtointernationalrepsexplainingthis.ButPOLLUXisstillspecialbecauseyouguys(i.e.CNES)steppedupearly.Shawn:Ihaveaquestion.Isthereameetingthatrepsofthesecountrieswillbeatinnextyearorso?Mario:COSPAR.Shawn:Tooaggressivetohavegeneralassembly?Mario:Inthismeeting,mostofthecountriesincludede.g.Spain,Isreal,GreatBritainwillingtoyieldtoUSonleadership.JAXAgavestrongerstatementthattheyregretnotbeingpartofHSTorJWST.Brad:TheysaidnotreadyforHSTbutJWSTwasamistake.Aki:Sothere’sthat.Whatisthethingcalled?IAU?(somechatterIcan’thear)Mario:Lastthingtheysaidistherewillbewhitepaperforeveryonetoread.Onethingwasconclusionwillbeinwhitepaperthatanythingunder12mforanyspaceagencytheyarenotinterested.Aki:Thatisinteresting.AnotherthingisKevinHengvolunteeredtohostusinBern.Canweaffordit?We’lldiscusslater,Julie.Kevin:InternationalspacescienceinstituteinBern.Brad:Whentheysolicitproposals?Mayhavemissedthatboat.

Leonidas:Usuallyit’satwo-yearcommitment.Ifproposalissuccessfulyoucommittomanymeetings.Aki:Okalittlemorecomplicatedbutnotnecessarilyunfeasible.Giada,areyouwritingstuffdown?(yes!J)Ok,ontoDRMS.

Assessing the science return: DRM Discussion AkiRobergeDRMs:

• DRMsmeanttoprovidequantitativerackupoftotalsciencecasethatcanbeachievedwithplannedhardwareunderrealisticconditions

• TPF-Cpublishedinjournalarticlesandseparatetechnicalreports.ReferencedbrieflyinmainSTDTreport.

Marc:Questioniswhatistherealobjectiveofincludingthis?Aki:HQisrequiringustodeliverthis.Iviewitasactualproofthatwecandothescienceweclaimwithhardwarewedesign.Proofofconcept.HORUSdidHST-likereportsbutdidn’tusethem.Wanttoavoid.Exo-Sdidcalculations,describedinreport,gaveresult.Afewprinciples:baselinelifetime5yearswith10yearsofconsumables.OnethingwealwaysstrugglewithDRMsatthisstageisoverheads.Weprobablyjustneedtocalculatescienceexposuresandslapreasonablepercentagesonforoverheads.AlsoinourcasedoingDRMcalculationsforeverysciencecaseincludingappendixisunfeasible.Dealwithitbyleavingopentimeinfiveyearsintowhichwecandotheotherstuff.Chrisworkonexoplanetyields(includingdiscoveryandpartialspectroscopy)isinverygoodshape.Butalotmorestuffhere.Goalforsplintersessionistositdownanddecidewhatitisyouwanttocalculate.Keepexpectationsfeasible.Needsomethingcomprehensivebutwecanstillgetitdone.WhilewehaveChris’stuff,lotsmoreexoplanetcharacterizationstuffwewanttodo.Listingthemandguessinghowmuchofeachthingweendupdoingwillbegoodstart.Dittoforgeneralastrophysics.Rackuplistingineachcases:whatarethecharacteristictypesofobservationsandabouthowmanydoyouneedtodotoactuallyachievesciencegoal?AndthenSSATvolunteeringtogetexposurecalculationsdone.ToactualchurntheETCstoassociatetimeswithobservations.Marc:HowdowedealwithGO?Aki:That’sabigchunkofopentime.Marc:Shouldbeverybigchunk.WFIRSThavingproblemthatalltimebutabitallocated.Wearesellingasgeneralobservatory.

Aki:IthinkweshouldsaythatallofthisisGOtime.Thesearejustrepresentativesciencecasesthatsomeonemightpropose.John:TheseareHSTtreasuryprograms.Aki:Yes.Weproveyoucandothem.Wearenotsayingthesewillbedonelikethis.BythattimeImightbewatchingthislaunchfromadeckchairinFloridaanyway.Doesthismakesense?

Technology development and sub-orbital payloads DebraFischerDebra:ProbablybiggestriskwefaceareTRLlevels.Greatifwecancomeupwithhowtoretiresomeoftherisk.Iamveryexcitedbysomeoftheprecisionastrometry.YesterdayMikeShaoandItalkingaboutdoingCubesattodoprecisionastrometry.TodayJasonandMarctalkingaboutKevin’sproposalaboutdoingCubesattoretireriskonUVcoatings.Placeinternationalpartnerscancontributesubstantially?CubesatprogramunderAPRAprogramandmyunderstandingtherethereprobablybealittleextramoneyinCubesatprogramnextyear.Makesitkindofexciting.Mitigationofriskreallycompelling.Aki:IwouldbeinterestedtohearfromMattandtechworkinggroupwhichlowishTRLitemssuitableforbeingpartiallyretiredwithcubesats.Dave:UVissuescanbetackleddirectlyandefficiently.Wecanspacequalifycomponentsandprocesses.Proposalsforinstancesforon-orbitbareAlcoatings.Pushdowninto60nmrange.Debra:Inparticularwaytodoubleup?Matt:IagreewithDave.Cubesatgreatdemonstrationplatformforindividualcomponents.Lowestoneultra-stablesystems.Probablywon’tmakealotofprogresswithcubesats.Requiresbigsystems.Deformablemirrors,microshutters,yes.Kevin:TocomebacktowhatDebrawasaskingaboutdoublingup,atleastfromUVsidewecandocoatings,detectors,maybeoneortwootherthingsincubesat.Matt:Microshutters?Kevin:Maybe.Doneonsoundingrocketsactually.Smallerthingsyoucandooncubesats.CubesatLaunchInitiativeaskedaboutgoingtoL2.Debra:Withacubesat??Kevin:Yeah.TheytalkedaboutpossibilityofdoingwithearlySLS.Notavailabletoday.Butwearen’tinpositiontodountilearly2021anyway.Doinginsitucouldcomeupinfuture.

Walt:Greatidea.AnotherthingisalotofinterestindevelopinglunarL2shuttlesusingASPArings.Wecouldputabunchoftechtogetherintoamicro-scaleobservatoryandattachittospacestation.Andthenbringitback.Womansittingbehindme:CanMariocommentonwhatitmeansforTRLadvancementflyinginacubesat?Countmoreorlessthansoundingrockets?Mario:Aslongasyouflyinstrumentsinsameenvironment.TRLrelatedtorelevantenvironment.Ifyou’redoingdeepspaceandflyingcubesatinloworbitwon’tworkaswell.Debra:Igetthatfordetectors.Butnotfromprecisionastrometrydemo?Youdon’tcareaboutenvironment.Mario:Butthat’stechnique,notTRLlevel.Debra:CommentonWalt’sidea?Whywecan’tsendsomethingtoISS?Mario:Wereceivecallfromastrophysicstocomeupwithideas.WejustlaunchedontospacestationNICERandICECREAMlaunchedinnextfewweeks.Secondpayloadlaunching.OtheronesEuropeancollabs.TheseareUSmissions.Fundingupto40maybe50milliondollars.Dave:WecarriedOpTIIXthroughPDR.Itdied.WhenSMDcouldnotprovide2-3milliondollarsthatwouldhaveleveraged30orwhatevermilliondollarsfromrestofNASA.PuzzledastohowtoengageSMDtobreakoutofstrictrulethateverythingspendmoneyonmustbecompleted.Mario:Myadviceistryagainbasedonsuccessofothermissions.Twoalreadyflying.Brad:Newsheriffintown.Dave:Formalopportunityforus?Mario:SMEXandMIDX.Kevin:ThereareacouplethingsthatIdon’twanttolosesightof.IftalkingaboutexplorermustbeTRL6beforeflying.Missionopportunity4byPDR.Thisisatechdevelopmentprogramwe’retalkingabouthere.Weneedtodistinguishbigthingsthatmustbeonspacestationorsoundingrocketsfromsmallthingsthatcanbedoneoncubesat.Forthingslikecoatings,detectors.We’reinterestedinlongtermdegradationproperties.Dirtyplacelikespacestationnotideal.IfinterestedinallthingsLUVOIRwantstodo.Cubesatsalonewellsuitedforsomethings.Don’tthinkanexplorermissionrelevantforourtechside.

Aki:Iwasn’tdeeplyinvolvedinOpTIIXthing.LookingatitfromperipheryofGSFC.Reasonfellapartatendwasthatitdidn’tdoanyscience.SMDwon’tputdownmoneyonthingsthatdon’tdoscience.SMDstillhasn’tfiguredouthowtosupporttechdevelopment.Olivier:Extensionofsuborbital,weshouldconsiderground-based.Notalwaysapplicablebutstillusefulforsomethings.Dividebetweengroundandspacehardertocross.Womanbehindme:IwanttopokeatwholeTRLadvancementusingplatforms.Iflongtermdurabilitythatcanbedoneinlab.Ifit’saboutgettingtospacecandowithcubesat.Arewegoingtopokeatitsayingit’snotsametypeofsystem.FlyingoncubesatnotflyingonLUVOIR.TRLaboutsystem,notcomponents.Aki:ButlowTRLsarenot.Woman:Everytimeyougetdifferentpeopleinroomtheyinterpretitdifferently.NeedsomekindofconfirmationfromHQwhenweputefforttoadvanceTRLwithcubesat,byendwhenwe’redone,weknowwhereweare.Julie:IwanttocommentthatwhenMarioofferedupmissionofopportunity,peoplebroughtupthatmissionopportunitiesmustbeatTRL6andTRL5whensubmit.Notanoptionforus.WestartatTRL3or4.JustwantedtoemphasizethatthisissomethingHQcouldgrappleabout.Mario:IssueiswhatAkisaid.SMDnormallyselectsanythingbasedonsciencedriversandoutcomes.NASAbadinsendingtechdemonstration.EvenSTMDwantssomescience.Ithinkwearenotafraidaswewerebeforeofdoingtechdemonstrations.IthinkifTRLcanbeimprovedinlab,youdon’thavetofly.Ifsomecanbedonefromground,we’reopen.Coronagraphtestedonground.Brad:TRL6saysitmustbeinrelevantenvironmentgroundorspace.Mario:Lab,ground,orbitalprogram.MicroshuttershadneverflownforJWSTexceptonrocket.OnlyTRLprooftheyhad.Firsttimetheyflewtheyfailed.Ithinkorbitalprogramprovidestestbed.Cubesatmissionofopportunitylater.Pathlab,ground,suborbital,cubesat.Approachinggoalofrelevantenvironment.Jason:IwanttopointoutthatnotwithinmandateofSTDTtopushthesetechdevelopmentprojectsthroughNASA.STDTshouldfocusonhowsetofneedsmapstofeasiblesetofdemonstrations.Aki:Forsure,Jason.Butlotsofpeoplehereinvolvedintechdevelopmentandcanpushthingsforward.ButwehavetowriteaPLANfortechdevelopment.Discussionslikethisvaluablepartofthatplan.

AllenDressler:Idon’tseetallpolesinTRL.Callingattentiontothemnotproductive?Therereallyareprogramsthatthere’skeytechthatifyoucan’tdo,youhavenomission.Matt:Lookatlistofourtechgaps.Onlyonewecandoiscoatings.ValuableforcubesattodoUVdemoofcubesatanddetectors.Butwon’tremoveourrisks.Allen:Ifyoutrytojumpaheadofthatrunriskthatothergroupswillstarttechwar.Idon’tthinkthesewillsinkusindecadalsurvey.Aki:PersonallyIhavebeenterrifiedofTRL2s.Worriedaerospacewillslapuswithbigriskthattranslatesintodollars.TheyalsosaidtheylookatholisticsumofTRLitems.Aerospacesaidknockingoff3swillhelp.ButDecadalisn’taerospace.Decadalcaninterpretdifferentlyiftheywant.Julie:AerospacesaidthattheDecadalandcommunityknowdetectorswillimprove,UVcoatingimprove.Thosewon’tsinkship.Hardestoneisultra-stableopto-mechanical.Throwresourcesatit?Shawn:Whenwetalktoaerospace,suggestthatourinternalinvestmentsbemadeinhighestriskitemvsspreadingoutbetweenmultipleitems.WhenwegavethemtwooptionsofadvancinglowTRLsignificantlyorsortoflowonesabit,theysaidfirstwasbest.That’swhatwe’redoingwithteamlevelresourcesinternally.Ifpeopleoutsideteamfindopportunitiesthatcandootherpartofitthat’sincrediblyuseful.Notasusefulasultra-stableoptomechanicalsystems,butstilluseful.FairMatt?Matt:Righton.Marc:Whatarewedoingforthatthing?Matt:It’snotteamresources.SATs,IRADs,workatJPL,CANwork.Moneygoingtoindividualeffortstobuildupcomponents.Wehaveindustryteamsparticipating.Pointbeingthereisalotofworkgoingon.Needtohappensoonerthanlaterissystemsleveldemonstration.Needtoshowthatasawholewecangettopicometerstability.Weneedtogettothat.Gettingtherebutnotyet.Shawn:Iwanttosayoneotherthing.Inadditiontoadvancinginadvanceofdecadalsurvey,wehaveresponsibilitytohavetechdemonstrationinreportthatgoesfromdecadalsurveytomissionandshowhowwewilladvanceTRLsuptolaunch.Soifyouhaveideasforlater,makesureDaveandMattknowaboutit.Dave:Twothingstosay,WFIRSTcoronagraph.Otheriscometoourtechsplinter.Willfocusonstudiestodotofillinstory.Idon’tknowifwecandoitbutI’dbethrilledifwecangetthatoneredTRL2uptoTRL3todecadal.

Matt:Headinginthatdirection.Wecandoit.Shawn:Thatnumber2camefromagroupthatwasindependentfromus.Matt:Butwewereinagreementwiththat.Shawn:AndthatassessmentsaysifwedomodelingMatttalkingaboutwe’llbeata3.Aki:Andthere’sa3ontherewecandealwithcubesat.Let’sdoit.LaurentPueyo:We’lllaunch(something).Wehavemodelshowinghowwavefrontactswithtime.Nmlevelnotpicometerlevel.Datasoon.Mario:WilladdressQ.onwhatisbeingfunded.(discussesprojectspeoplearedoing).Finalreportmustincludetheseefforts.Debra:Coffeebreaknow.---coffeebreak---

Exoplanets & Solar System DRM splinter session NotesbyGiadaArneySolarsystemPlanetarysystemarchitecture

• Comets,asteroids,KBOs• Comparativeatmospheres,diversityandcomposition• Planetarysurfaces• Oceanworlds

BritneythinksspectroscopytargetsbiggestunknownatthispointLotsalreadydoneonsurfaces,aurorae,atmospheresNeedONIRStooldoneWeneedtoaskpeoplewhattheywantthatwedon’thaveyetCourtneywantstobeabletouploadyourownspectrumtotoolsVikki:CanwejustifyspectroscopywithLUVOIRvswhatwedofromgroundwithEELTs?Sciencecaseforbeingaboveatmosphere?Britney:QuestionespeciallysincenotgoingfarintoNIR.Questionabouttemperatureandfocalplanet.InUVthere’sstillacase.Lottobedone.Vikki:Spectralmappingkillerappbecausecan’tgetspatialresfromground.

Britney:Exactly.Mark:Dependsonhowgoodadaptiveopticsare.Shawn:AOworksbetterinIR?Vikki:Yes.Shawn:VisiblemightbecomplimentarytoAOonground.Olivier:HardinopticalwithVLTs.Challengedependsonguidestar.Jupiterfairlybig.Canusesatellitesasguidestar.Definitelyhardinoptical.InIRwillworkbutmaybenotat100%.Mark:Anythingelsetoconsideronsolarsystem?OkmoveontoexoplanetDRM.TalkingtoAkiwereallyneedconsiderationbeyondwhatChrisalreadydone?Twocategories:non-habitable,transitscience,whatelse?Olivier:Extensionbeyondtransitisfoldinginothermeasurements.Mark:GroundbasedcountaspartofDRMsaslongaswedon’tneedit.Olivier:HowdoweinterpretdatawegetwithLUVOIRfoldinginadditionalmeasurements?MassmaynotcomefromLUVOIRbutcriticalforinterpretingspectrawegetwithLUVOIR.Don’twantdependtoostronglyonthingsthatmayormaynotpanout.Atthispointwedon’tknowenoughtoallocatetimesformakingastrometry.Wecanwriterequirementsofwhatweneed.Laurent:Howmuchtimetospendtrackingdownfalsepositiveastrophysically?E.g.spend10%oftimechasingdownbackgroundstars?Olivier:Examplewherecanusegroundbasedtelescopesaheadoftime.Identifyfalsepositivesaheadoftime.Courtney:Chapterorappendixwherewetalkaboutgroundbased?Andtalkaboutotherobservationswecangetinadvanceorsimultaneously?Shawn:OtherthingthatistoodetailedforreportbutalsoshouldtalkaboutwhatgroundbasedobsgiveusforpriorinfobetweennowandLUVOIR.TalkaboutwaystogetdowntorockyHZworldswithprecursorobs.Wewillbeabletoaccountforthosemuchbetterby2035.Mark:PointofviewofDRMforhourswehavetoadduptois:

1) Formass>whatever(5earthmasses)nosearchjustexposure.2) WantcharacterizeUV->nearIR

CourtneyDressingandDebra:re.firstpointstillreallyhard!Dependsonsemi-majoraxis!Courtney:Wecanspecifyassemi-amplitude.Karl:Grabsomethingrepresentative.Shawn:MasslimitofRV?Debra:Dependsonvelocityamplitude.K=2m/scurrentstateofartwithroughly1m/serrorbars.Courtney:Alsosampleofstarsnotallsame.Probablyworththinkingaboutthisalittlemorecarefully.Karl:PaperdoneforExo-SandExo-C.NicetorepeatforLUVOIRtargets.Mark:Questionisforcomparativeplanetaryscience,dowedodedicatedsearchordowhatfallsoutofHZsearch.Karl:you’reaskinghowmanyRVplanetsinHZsearchthatChrisalreadycreated.Weneedtoknowanswerandaskquestionofgroupisthatenoughforotherplanetsciencewewanttodo?Shawn:Thinkingforfutureteamsistradewe’vebeentalkingaboutonIFU.WeshouldtalkabouthowsciencewithplanetdiversityquestionisimpactedbywhetherwehaveIFUorcamera.Documentingisimportant.Mark:CertainlyinnoIFUcasewehavetosearch.Andhowmuchtimedoesittake?Karl:CanweagreethatstandardobservingmodeinparallelforvisandNIRobservationssowegetbetterIWA?Dave:Yesthatcanbedone.Threecoronagraphfields.Laurent:Twoinparalleldoingscienceandoneforwavefrontsensingstability.Shawn:DetailedsimulationsofplanetdiversitywehaveUV,Vis,NIRchannel.Wegettopickwhichoneiswavefrontstability.Othertwocaneitherdocameraimageorhighrespectrum.WecanflipbetweenthosetwoandflipbetweencoronagraphmaskstolookatdifferentIWAs,wavelengthwithinband,spectroscopyorimaging.Laurent:ForbaselinecoronagraphwhichisshapedpupilsNeilisdesigning,thewayweputthemasksinfilterwheels,wewillhitHZregardless.Thiswhysomanyfilters.

Dave:QuestionIhaveiswetalkedalotaboutIWA.OWAalsoinfluencearchitecture.DMdensityorwhatever.Karl:Ifyouwant1010contrast,youwanttogetouttowheregiantplanethas1010contrasttouseouttousefulfieldofview.Outto10AU.Shawn:Roughly10xIWA.Karl:Noarangeofdistances.1arcsecisrealisticOWA.ThingIwanttoaskiscanwedowavefrontcontrolincoronagraphusingUVanddoobservationsinNIR.Laurent:Doingwavefronttodigdarkholeinvisible,oncegetdarkholeuseUVtogetwavefrontsensing.Olivier:MosttargetsUVdoesn’thavealotofphotons.Dave:We’vedonenumbers.Willhavequicksummary.Karl:ImportanttoknowwecandoopticalandNIRatsametime.Laurent:Absolutely.Karl:UVmaynotbeusefulforwavefrontcontrol?Laurent:Foralltargets,true.Shawn:CanextendUVchannelfarenoughintoVIStogetenoughphotons.Alsotechdemoalsolaserguidestar.Dave:Alsoindirectmethods.Wavefrontsensingwon’tdohighbandwidthstuff.Otherstuffforthat.Accuracyvsloopclosuretimes.Wethinkwith1mKthermalcontrol,alasermetrologysystemwillbeabletomaintain10picometerstability.Willdriftbutwillrelaxbandwidthrequiredforwavefrontsensing.Stilljugglingexercisefordifferentmethodstoachieveoverallsystemgoal.Wehavetools.Willplaytoolsoutindifferentcombinations.Shawn:ForsakeofDRMassumefornowwecanuseanyofthethreechannelsasoutofbandwavefrontcontrolband.Ifwe’reconcernedaboutthatlet’snottableitbutaddressseparately.Ifendsupnotpossiblewemayhavetore-addressDRM.Karl:Let’saskforityeah.Shawn:Butonlyonesmallchunkofchannelatgiventimebecauseoffilters.Olivier:Can’tuseall3channelsatsametimeforscience?

Laurent:YesMark:ForthisDRMwe’regettingotherclassesofplanets.IfweseefatjuicyHZplanet,integrationsonJupitersarefree.InsomecasesnoHZtargetandthatcountsagainstusforobservingJupiter.ForDRMneedflowdownfordedicatedtimetodothis.Idon’thaveafeelingforhowtoapproach.Debra:Listoftargetstars?Shawn:YesChrishaslist.Hepopulateswithplanetsanddoessimulatedobservations.HepresentedatlastSTDT.Heendsupshowingfieldimageofwhatyouseewithcoronagraph.Laurent:Wearegivinghimrealcoronagraphs.Mark:TellChriskeeprunninglistofothertypesofplanetsyoucharacterize.Giada:Christoolsgivehowmuchofspectrumyougetforplanets?GivenOWA/IWA?Dave:YesShawn:Ithinkweneedtogothroughdetailedlogicalchainofwhichbandsatwhichresinwhichorder.Needonecaseofsystemwithknowntargets.Weneedabrainmeldingsession.Mark:Let’stouchonfewmorecases.Transitingplanetscience.Dave:IR.Mark:UVforescape.(somediscussionabouttransits.Missednotesforamin)Shawn:WhatwediscussedinSSATisthatwhenwetalkaboutmainsciencecaseinmainpartofreportthatmainstrengthsinspectroscopycaseisUVsciencebutwealsoforthesecornercasesforbothkindsofinfowriteupinappendicesasanotherexampleapplication.Dave:Thosewillbecasesforbroadestpotentialforspectralcharacterization.EricLopez:TransformativethingswecandoandtrulyuniquethatLUVOIRcandoiscomparativeplanetologyofexospheresacrossrangeofparameterspacefordifferentclassesofplanetsforrockyonesallthewayuptogiants.Wecurrentlyhavesamplesizeof4.5planetsforwhichwehavedetectionofanyspecies.Whereaswhenyouhave8+mspacetelescopeyoucangetmanyimportantspecies.YoucandopotentiallyforHZtransitingplants,candoforTRAPPIST,cangettimeresolvedobservations.Calculationweneedtodoistakesomesortof

simulatedtransitcatalogs,simulaterealstars,magnitudes,radii,guessesatmasses.CalculationIimagineisyougetoforder30planets,whatcanyousee?Shawn:BytimewelaunchwewillhavecoveredJWSTwavelengths.UVtransitsiscomplimentarytoJWST.Vikki:CanIaddextrapoint?BuildingoffwhatEricsaidandGiadamentionedearlier,ourdeliverableshouldbemoleculesdetected.Thatisimportantfortransitscience.Thatshouldbeourultimatemeasurementfordirectimagingsize.Chrisisn’tgoingthatfar.Alsowanttosayifwedon’thaverealisticspectrawecan’tgetrealisticphasedependence.Importanceforyield.Mark:Detectionvsabundanceneedstobediscussed.Dave:foractivestarswe’vebeenthroughdebatebutdon’tforgetcapability.Especiallyfordepletionofatmospheres.Olivier:Alsoneedtodiscussastrometryofplanettostar.Howdoweresolveorbitofplanetaroundstar?Karl:3-4followupvisits.EricNielsondoneanalysisforHabExandwecanshare.Olivier:Wehavenotyetdiscussedpolarimetry.Whatdoweneedtomake?Whatprecision?Mark:Depthofcharacterizationoncewehavegoodtargetisagoodquestion.Shawn:Wegetpolarizationinfoforfree,right?Wehavetodopolarizationaspartofwavefrontcontrol.Laurent:That’sadiscussionwithWFIRST.Mark:Problemwithspectropolarimetryisthatinbandswhereplanetdarkestfewestphotons.Laurent:maybeforimaging.Maybefordisks.Mark:I’mapolarimetryskepticforplanets.Olivier:Cangetpolarizationmaintainingfibers.Ifweneeditwecanimplement.Laurent:Isthereasciencecaseforit?Mark:CassinilookedatJupiterathalfphasewhereshouldbesuperpolarizedbutnot.

Karl:Addplanetaryphasecurves.SinceI’mafraidyou’llerasedisksagain,weneedtodosamethingasRVplanets.FromChristargetlistlookandseehowmanyknowndisksareinthere.Seeifsatisfactorysciencecaseornot.Shawn:EvenforsystemswithknowndiskscurrentobservablewecanseeclosertostarintoHZ.Karl:Forthingsnotdiskselectedtargets?Shawn:Whatissciencewegetoutofextendingobservationsofdisksclosertostar?CoronagraphenablingKarl:Forsomedisksthat’sdesirable.Cancomeupwithdisk-selectedtargetlist.Starttodevelopcase.Seecolors,differentepochs,projectedspeed.Laurent:Wannagobacktofirstpoint.Chrishasdisks.Exozodi.Weneedtoincludethatexozodiproblem.ThrowawaytargetswhereHZwecan’tdoanything.Thenwemoveforwardtosomethingelse?Karl:Firstvisitontargetwherejusthaslotsofdust.Probablydon’tdorevisitforHZ.Mightdorevisitforotherplanets.Mark:Stillpartofsignaturesciencecase?Shawn:SomenotinfullDRMbutforappendixprobably.MiniDRMifyouwill.Karl:Iwanttomakesuresomegooddebrissciencecase.BekkiDawson:Wehaveyoungdebrisdiskcase.Thereisayoungdebrisdisksciencecase.Alsocaseforoldersystemsincasewhereexozodiisnuisancebutalsoagoodthingbecausecantellyoustructurethatcangiveconstraintsonplanetmass.Partofsciencecase.Whatwehaven’tdoneissaywhatnumberoftargtsorothercapabilitiesitdicates.Debra:Precisiononmeasuringdust?Canmeasureonezodi?Firstcharacterization?Mark:WFIRSTwillbefirst.Bertrand:WFIRSTat10-100zodilevel.Hopethatyouguyswilldomuchbetter.Karl:Ithinkitcandobetter.Wecantalk.Mark:Whatarewemissing?FollowupofHZgoodtargets.Comparativeplanetaryscience.Transitscience.Disks.Whatelse?

Aki:Icameoverwithmessagefromotherside.Ashighlevelviewofhowwe’regonnadothisDRM,MariosaidHQisokwiththis.Waythey’redoingDRMsis100hourtreasuries.OneforeachCORsciencecase.Fineifexoisdifferent.It’sgoingtobe.NotionisapproximatelyspeakingfillupayearofCOR,fillupayearofexo,someforsolarsystem.Thosearetreasuries.Restof5yearsisopen.Inopentimeistimetodosomeofalloftheotherstuffwe’retalkingaboutinreport.MariosaidHQokwithnotplanningouteveryminutefor5years.Mark:IheardoareallygoodjobonexoHZsearch.Canleaveotherstuff…Aki:OtherstuffcanbemoreopenCourtney:Nicetohavetimeinappendixfortimetodocertainthings.Shawn:Table?Aki:Coupleexamplesofshortprogramstootoshowabitoftherange.CORspendingalotoftimethinkingaboutwhatparallelstheygetwhendoingexoplanetobs.Serendipitousparallelsduringlongexoplanetobservations.Characteristiclongexoplanetexposuretimewouldbegoodforthem.Theyhaveprogramsthatdon’tcarewheretheypointinsky.Mark:Needtopickandscopeoutinsomedetaillegacyprograms.Courtney:Ithinkwe’remissingUVcharacterizationofhoststars.Aki:AnyinfoIcarrybacktoCOR?Courtney:Debrisdisks!Aki:They’rehere.DebrisdisksareEXO.ProtoplanetarydisksCOR.They’redonewiththatDRM.Bertrand:Thingwehaveinbothmissionstudies.Debrisdisks,exozodis.Ithinkpeoplegettingconfusedbetweenthese.Tomeexozodisarejustfaintendofdebrisdisks.Aki:Ialwaysviewprotoplanetarydisksasprimordial.Debrisdisksareyoungplanetarysystems.We’vetalkedaboutthismanyyearsago.Debra:Zodiconsiderednoisesource.ExposuretimefordebrisdiskinETCs?Iwantthat.Aki:Youngdebrisdisksalotbrighter.Reallyshortobservations.Debra:Whatabout1-2zodi?Aki:Getforfreewhendoingexoplanetobs.

Bertrand:That’syourpaperAki.For4mtelescopelookingatsolarsystemat10pcfluxof1zodiequivalentis4xEarth.Largertelescopeiszodilessofhindrance.Aki:Ikindofdon’tcare.IfIwanttostudydebrisdisks,Iwillwanttolookatyoungerbrightersystems.Debra:WemightcareintermsofwhichstarsbesttodrilldownforEarths.Aki:LBTIhostsurveyhopefullydeliveringmeanexozodilevel.Bertrand:Individualstarsneedtowaitformission.Aki:Missionplanningsoftwarewilladapt.Chrissoftwarewillde-prioritize.ChrisDRMcodes,thisisoneofhisnewinnovationsofasmartplannerthataccountsifyouhitabadone,itwillmoveon.Karl:InLUVOIRwithbiggerapertureexozodifainter.Wanttoseestructuretogetconstraintsonmass.WanttoknowhowlongtoimagezodiwithLUVOIR.Aki:Daywecanmake1-1comparisonwithexozodiobservationsandplanetmassisdayIwillworryaboutthisindetail.Wearen’tthereyet.Mark:CharacterizeeverytargetinUVorjustoneswithplanets?Courtney:VikkiyouthinkwewantUVfromstarforallplanets,notjustonesHZ?Vikki:Absolutely,doitforallplanets.HighlyevolvedthingssubjectedtoalotofUVforalongtime.Andimportantforfalsepositives.Mark:Forallplanets?Vikki:Yes.Forstellarevolutionaswellifpossibleforevolvedtargets.Eric:Iwantedtoaddthatforsometargetswe’reoftennotjustinterestedinUVtodaybutUVhistory.IfevolvedtargetsweneedtoknowwhatUVlikewhen100Myrold.SomeworkdonebeforeLUVOIR,butcharacterizingyoungactivestarsandhistory.WantUVactivityindetail.HighSNRtimeseriesinformationisnewopportunityinFUV,NUV,inmanydifferentspeciesallatonce.Vikki:Totallyagree.Weneedtoknowspectrumandactivityattimeweobservetounderstandphotochemistryasweseeitnowanddetermineifanydisequilibrium.Knowinghistorykeytounderstandingevolutionandbulkcompositionweseenow.Mark:Ifgreattargets,groundbasedwillfollowup.

Vikki:Can’tdoUVfromground.Eric:TimeseriesUVontimescalesof10sofminutestohours.Relevanttimescaleofflares.Worthwhiletoseewhatsortofmajorprogresscanbemadethatcan’tbedoablenow.Dave:Wegetthisforfreeonallwithrejectedlight.Shawn:IfLUMOSdoessimultaneousobservationsgamechangerDave:Notseesameobject.Courtney:Thatwouldbegamechanger.Mark:Weneedtodofollowupfororbits,phasecurves,fullspectrumatlowres,highspectralres,whatareexposuretimes?Christakingintoaccountexposuretimesforspectralyield?Shawn:Ithinkhe’sawareofthisbutisn’tdoingityet.Coronagraphbandpasswillbeimportant.Chrisworriedaboutthiswhenhetalkstous.Makesmethinkheincorporates.ForfolksinroomthinkingaboutLUVOIRvsHabEx.HabExhaslegitadvantageasitwillusestarshadeforspectralcharacterization.Bandpasssesforstarshadebroader.Courtney:ImportanttoaddwhatwecandoonLUVOIRwithstarshade?Inappendix?Mark:We’dhavetostopdown.Shawn:Goodtoinclude.Courtney:Niceforpeoplereviewingproposaltoknowdon’thavetogiveupstarshadeforLUVOIR.Karl:Reallyreallybigstarshade.Mark:ForHZDRMneedtomakesureChrishasenoughofrHZcase.ForcomparativeplanetaryscienceI’mhearingwedon’tneedfullDRMandexposuretimeestimates.Erictomakenominallistfortransitplanetsciencecase.DisksKarlyoudo?Karl:Akialreadydone.Bekki:Idon’thavetargetlist.Karl:Icanhelp.Mark:Solarsystemwediscussedalready.

Shawn:MattconfirmedthatLUMOScan’tdosimultaneousobservationsofhoststar.Canmonitorwithoutofbandchannel.Kevin:LUMOSobservationsveryfast.Mark:CanwegetChrislistofobjects?Shawn:ChrisgoingtobehereforHabExmeeting?STScIpeople:No.Onvacation.Jason:TheexoEarthyieldtoolhasthese.Youwantlistofstars?Mark:Wewantacopy.

COR & PCOS DRM splinter session NotesbyJulieCrookeEfficiency=photoncountingtimerelativetowallclocktimeIndividualInstrumentefficiency=photoncountingtimerelativetowallclocktimeforanindividualinstrumentParallelinstrumentobservatoryefficiency:photoncounting(includingallinstruments)timerelativetowallclocktimewhenzeroinstrumentsarecollectingphotonsToDoList:

1. Adoptanefficiency~60%(Cansubinanothernumberlater)2. WeneedtonameallofthescienceobservationsthatwecanthenassignROM

integrationtimesforeachsciencecase3. Ismovingmechanismsdetrimentaltootherscienceinstruments(otherthanthe

coronagraph)4. Eachinstrumentshouldshowtheir“100hourhighlight”

a. Fluxlevelb. Signaltonoise(S/N)c. FOVd. Howlongdoesittaketoaccomplishasinglefield?e. Howmanyfieldsdoesthesciencecaseneed?f. Example:In~1hour,LUMOSwillreachS/N=10perresolutionelement(R=

40,000)overa3’x1.6’fieldtoF(sublambda)=F(100Angstroms)=2x10^(-16)5. Arethere“precursor”observationsneeded?6. Canwecreatea“TemplateDRMSheet”?

7. Makealistofeach“100HourTopic”8. GSFC’sSSATofferstheanalysistoolto9. Foranygivensciencecase,doesitneedtoseekaspecifictargetontheskyvs.canthe

sciencecaselookatanyrandompointing?10. Everyonethinkabouthowfarintothe5yearsdowewanttoplanvs.aGOprogram?11. Theseareall“GOTreasuryPrograms”12. Exerciseallscienceinstrumentmodes13. Makesureyoustate,foreachsciencecase,the“InstrumentName”“ModeName”and

timeifyouknowit,otherwisegivethattoGSFCSSATandtheycanhelpfigureoutthetimeneededforagivensciencecase

14. MattBolcarismeetingwithMikeShaotodiscussefficiencyofswitchingtodifferentinstrumentmodes

15. AlanDressler:ItwouldbehelpfulforLUVOIRtostate,“Howmuchtimewillbeusedforsurveysvs.timeusedforsearchingmanydifferenttargetstogenerateacompositefromanumberofpointings?

16. Also,whilethereisaprimaryinstrumentoperatingatonetimeandthatinstrumenthasacertainobservingefficiency,itmaybegreattopointoutthattherecouldbeparallelobservationswhichwouldincreasetheoverall“observatoryefficiency”.

17. Aerospacewillensureoursciencestoryandhardwareimplementationareself-consistentandneedstobeaccomplishedwithinthefirstfive-yearprogram

18. WhatgoesintheDRM:a. Listinstrument(s)andthemodes(detectors,gratings,resolutions,filters/bands,

etc.)yoursciencecaseneeds(mightbemultipleinstruments)b. Listnumberofpointingsc. Numberoftargetsandtheirlocationonthesky?d. Justificationforexposuretime(S/N@fluxlevel)(ExposureTimeCalculator

(ETCs)e. Totalexposuretimef. Canthisbedonewithparallels?((1)eitherwhenyouareprimecanyoutolerate

otherinstrumentsoperatingand(2)orifanotherinstrument/modeisprime,canyouperformyournecessarysciencebeingasecondary?)

g. Isitcompatiblewithotherinstrumentmodes?h. Cadence:(needtoobservethistargetevery(frequency)foragivenduration)i. TargetofOpportunityj. Otherconstraints?

---lunchbreak---

Exoplanets & Solar System interim report spl inter session NotesbyGiadaArneyNeed“LUVOIRwilldothis”forsciencequestionstotiebacktofacilityWhatdoesLUVOIRdobest?

Vikkiwantsa“sellingfilter.”Notjustthesciencecase.Vikki:Ireallyhate“conventionalhabitableenvironments.”Impliesweknowwhatthatmeans.Ichangedtoterrestrialexoplanethabitableenvironments.Don’tneedtospenthugeamountoftimeonalternativehabitableenvironments.Mark:Movetoappendix?Vikki:AtmomentwehavethingslikeHdominatedworlds.Canweevendothat?Weneedeyesandfocusondetectability.Courtney,theyputMdwarfhabitableplanetsinalternativehabitableenvironments.Courtney:What??Thatshouldbeinmainsciencecase.Vikki:Agreetomoveupintosubclassofterrestrialhabitableenvironments?Courtney:Yes!Vikki:WecantalkaboutGdwarfclassicandthentalkaboutMdwarfs.Idon’tthinkalternativehabitableenvironments.Largestrealestateingalaxy.Wecangetsomeindirect.Courtney:OneswewillgetwithLUVOIRwillbewillcharacterizedbytimewelaunch.Vikki:Canmakelovelycasefortransitingobservationsandwhatdirectimagingcanprovidefordeeploweratmosphere.Courtney:We’restartingthisasasciencepaper.Shouldweinsteadwriteitasanewsarticle.Leadwithheadlines?Karl:“LUVOIRwilldothis.”VikkI:Ourentiresellingcaseshouldberightatthetop.Wereallyneedtosellpeople.Proposalwonandlostinfirst30seconds.Debra:AstronomybeforeandafterLUVOIR.Somefigurethatkicksoffandhookspeople.Vikki:Idon’tlikestartingwith“Whatdoeshabitablemean?”Ithinkweshouldstartoffwiththediversityofhabitableenvironments.Exoandsolarsystem.Mark:InhabitedEarththroughtimeisexampleoftemplatespectrumchangingthroughtime.Vikki:IseeEarththroughtimeasalternativebiosignatures.Falsenegativepotential.

Giada:Proterozoicoxygenisthere.Oxygenisthebestcasewecanget.Weshouldbehonestabouttheopportunitiesandchallengesofanoxicphasesthough.Talkaboutoxygen,Proterozoic,andanoxicphase.Vikki:Ilikesequenceyoujustsaid.Eric:WeneedtoemphasizethatphysicsthatproduceabioticoxygenuniquelydetectablewithLUVOIR.Vikki:Agree.Falsepositivessection.Giada:WheredoesearlyEarthstuffgo?Environmentsvsbiosignatures?Vikki:Firstpartisenvironments,secondisbiosignatures.Giada:Trickytodisentangleforsomephasesofhistory.E.g.methane.Vikki:Introduceanoxicenvironmentsinthefirstsection.Eric:Whataretheobservations?Wewillimage?Wewillseeatmospheres?Aki:ThatsectionbasedonShawn’spublishedworkaboutputtingplanetinholisticastrophysicalcontext.Summaryofrecentworkonhowtogetoxygenwithoutlife.Eric:I’maskingaboutearliersection.Mark:Firstwefindplanetwelike(habitable3.2)thenwelookforlife(secondsection3.3).3.3isdiggingdownintohighresspectra.Aki:3.4iswhereittiesthewholesouptonutsconnectedtoDRMsequence.Startwiththeseobservations,ifthisthenthat.Ifothergothisdirection.Mark:It’sweirdbecausewe’vegottwosignaturesciencecases.Aki:Thisisonelongstory:whichworldsarehabitable,whichareinhabited.Awhilebackwelaiditoutthatin3.4,Shawntakespiecesfrom3.2,3.3andmakesasequenceofobservationsprogressingtodescribethefilter.Triangularfilterofhowyouprogressfromcoarseobservationonabunchofthingstofollowingupmoredeeplyonmorepromisingtargets.Vikki:Insciencecasescandodesiredcharacteristics,measurementsrequirementsforthose,andinDRMtietogether.Aki:Ithinkyoucantiethemalltogetherin3.4toactualobservations.

Mark:Withtheadditionalsectionsfortransitingcase,forsolarsystem.Aki:Yesthatgetsalittletricky.Wellitdoesn’thavetobe…it’spossibleDRMforocean/icyworldsisbeststayedin3.2.3.Thatisoktoo.Eråic:Iwaswonderingforsection3.2and3.3,shouldtherebeaspecificsummaryofwhatisthecoretreasuryobservation.For3.2wewillcharacterizeifalreadydetectedorwefindXnumberofplanetslikelyrockyinHZ.Mark:MoveChris’ssectionto3.4?Courtney:Interspersefigurestotiealltogether?Aki:3.2.6iswhatyouwritefor3.2.7.Courtney:3.2.6ishowyoudothis,3.2.7iswhyyouwanttodothiswithLUVOIR.Aki:WhyLUVOIRishowtodothisisdoneabove.BasicallyChris3.2.6ISDRM.IngeneralIdon’tseewhyspinningoutanothersub-subsectionforhowLUVOIRdoesthisbestwhenItshouldbegeneraltheme.Courtney:Shouldbecalloutboxes.Aki:Calloutboxes.Yes.Mark:Thisisawesomevsaperture.Aki:Shouldbebodyoftext.Resisturgetospinoutzillionsofsubsections.Courtney:PlusifcalloutboxwhatsomeonewillseeifjustskimmingdocumentMark:Wejustneedtogettextinheretoseewhatmakesmostsense.Courtney:Worthwhiletothinkaboutfiguresweneed?MarkandAki:Yes.Eric:Shouldhavecartoonplanetshowingwhatyougetfromsurfacetoexosphere.Aki:Andsourcesandsinks.Sopeopleseethatabiosignatureisasourceoutofbalancewithsinks.Vikki:andaddstarattop.Otherplanetsinsystem.Holisticpackageofwholesystem.

Aki:Iwouldn’ttrytopacktoomuchintoonefigure.Ifarchitecture/dynamicsthing,IthinkBekkihasideaforhowtodealwiththat.Bekki:Maybeitgoesinnextchapter.Aki:Butitwillbereferenced.Thisisgoodideaforfigurebutfocusonatmospheres.Eric:Ihavethoughtsonspecificsonhowtodofornon-habitableplanetsforchapter4.Ifsomeonehasgoodthoughtsonhowtodoforchapter3,wecancoordinatewithGoddardgraphicspeople.Giadawecoordinate?Giada:YesAki:YeahVikki:Britneyanywaytoworkinsolarsystemaspectaswelltodiagrammaticallyshowdifferenthabitableenvironments?ThemegoingthatwhatwelearnfromSSandexoinformseachother.Aki:Thatcouldusesomethought.Vikki:Havinggraphiccouldbehelpful.Britney:Idon’tthinkitwilllooklikeoneoftheseplots.IsupposeyoucouldstickJupiteronthereorsomethinglikethat.Surethere’sawaytorepresentit.Vikki:Ithinkthisissayingweneedtodevelopsciencetheme.Debra:Stickingwithdata,whatwe’redoingnowishere’swhatahabitableworldwilllooklike.Insteadthinkaboutdataweactuallygetfromtelescopeandhavethatpointtoscienceinterpretations.Rightnowwestartwithinterpretationofdataandsearchforthatthing.LUVOIRdoesstatisticalsurveys.Iknowthismixesup3and4.Aki:LaurentshowedmevideothismorningofadifferentversionofKeplerorrery.Hardtodescribeinworlds.SummarizesifdotsareplanetsoutofDRMandzoomsinabit.Startoutasblackdots.Thenbecomecoloredbecausephotometry.Thenorbits.Thenspectrumpopsup.Theygofromblackdotstospectra.InfographiclikewhatMarksketchedisgoodillustrationforwhywearesettingupourexperimentinthewaywesetitup.Giada:SoundssimilartothevideoShawnwantstodo.Aki:Yes.Mark:Intermsoffiguresforawesomevsaperture…

Aki:Shawnhadanideaforagraphiclikeayearago.Wehavetodecideifthisistoopoliticallysensitiveornot.(sketches)Olivier:Thisdoesn’tcapturediversitywithaperture.Maybewedrawpopulationontwoaxes,ormassononeaxis.Astelescopesizeincreases,largernumberofthosethatwegrab.Aki:Dopeoplelikethisexecutivesummaryfigure?Debra:Yes.Eric:Equivalencyforgalaxies?Debra:weneedtoavoiddoingaHabExcomparison.Aki:Yes.ThetopwedoEELTs.Debra:Nowwegointoparameterspaceandshowcharacterizationwecando.Havethatdriveorganizationratherthanjuststartingoutwithhabitableplanets.Mark:Chrishasallofthis.Justtovisualizeit.Aki:Wemakeaxishabitablezoneproxy.Debra:someprobabilitywewilldetectthoseplanetswiththoseinstruments.HardtodecidewithELTswhatwillbeseen.Aki:Oliviercorrectmeifwrong,nobodythinksELTswillreachcontrastlevels.Olivier:SweetspotforELTsisNIR.MandpossiblyK.OnenicewayofrepresentingisyoucandrawrangeofspectrumELTswilldetectwillbecomplimentaryforwhatLUVOIRwilldo.GroundbaseddoNIRofProximaCen.HabExwilldovisiblepart.Ithinkitdepends.SunlikestarswithterrestrialplanetsveryhardforELTs.Theywon’tdoitVikki:Whatabout10umobservations?Olivier:Ishouldhavementioned10micron.ELTswilldoplanetsaroundsunlikestarsat10um.Spectroscopy.Firstlightinstrumentwilldothat.Numberoftargetsnothuge.About10stars.Wewillgettheirspectrafrom6-7tomaybe13microns.Ifyouhavevisiblelightandyouhavethermalemissionat10umonthoseplanetsyouactuallycanmeasureradius.Aki:Whichstars?Olivier:Procyon,Sirius,AlphaCenAandB.

Betrand:Spatialresolutionanissue.Aki:ThoseareAtypes…eeeeshMark:Wehaven’ttalkedaboutoursecondchapteryet.Movingontochapter4...Ihatethewordplanetology.Wehave3sciencecases.Architectures,atmospheres,surfaces.Vikki:Executivesummaryattopagain?Mark:Yeah.What’stheelevatorpitchforarchitectures?Bekki:Rightnowit’sthreeaspects.Planetformation,oneisbeingabletousearchitecturetobetterunderstandplanetyou’reinterestedin.Otherisidentifyingdiversityofplanetarysystems.Mark:Importanttocapturemore.Beyondcounting.It’stypes,compositions,disks,icegiants,wholecontext.Bekki:Yeah.Notmuchdiscussionofoccurrenceratesrightnow.Mark:Whataboutfigures?Courtney:Cooltoseeacoolsystem.Showhowmuchmorewelearnaboutsystemasawhole.Debra:Definitelyshowhowastronomyistransformed.Vikki:Andtieinbacktohowitinformshabitableplanetsaswell.Bekki:Ihaveadraftfigureinfolder.Somefiguresinfiguresfolder.Courtney:IlikethatBekki:Withthatone,ideaistoshowexamplesystemandtiebacktohowitinformsusonpotentiallyhabitableplanetinsystem.CartoonthatAkiandIalsotalkingabouttherecouldbeamockimageinsteadofjustcartoon.Inthiscaseplanetofinterestisinbluecircle.Captiontalksabouthowdifferentpiecesofsystemallinformusonhabitableplanet.Mark:It’sthecontextofthesystem.WhatifeveryhabitableplanethasaJupiter?Eric:Bekki,couldyouaddseriesofblowoutboxes?BoxfromEarthwithpotentialspectrum.Fromdiskshowingyoucandetectdowntosuchandsuchfractionofzodi.ForJupiterwedetectothercompanionsdowntosuchandsuchlimits.Bitsonhowamazingyoucandoondifferentcomponents.

Bekki:Goodidea.Mark:Good.Bekki:Wherewecouldhavemoreawesomevsaperturemoreforyoungexoplanetsectionwhichincludesyoungdebrisdisks.Cantalkabouthowyoureallyneedthisaperturetelescopetobesensitivetoterrestrialformingregion.Mark:Numberofsystems.Bekki:Easierforyoungexoplanetsystems.Otherfigureswecouldhavecouldshowhowasafunctionofageyouseeregionofterrestrialplanetformationchangingandimagesshowingfeaturethatterrestrialplanetssculptindisks.Notsureifwehaveroomornot.Don’tillustratenecessityofhugetelescope.Eric:Forsomethinglikethat,couldyoudosomethingliketakeoneoftheLUVOIRHltauimageandthenshowfantasticfeatureyoucanseenowoutat20-50AU,andthenzoomintoregionunresolvedwithcurrenttech.ShowsyntheticimagethatlookslikeALMAforinnerdisk.Bekki:Goodidea.Mark:ButnotHLTau.Eric:Right.TonsofsyntheticALMAimagesforwhattheycandoinexteriorsordisks.Intermsoffiguresforsciencecase2,Iwasimaginingtheexoplanetatmospheresummaryfigureforthiscase.AsimilarfiguretowhatMarkdrewupthere.Insteadofsolidsurface,youhave1baratmosphereandshowclouddeck,showwhatever,zoomoutwithspectruminopticalphotosphere,otherblowoutswithinformationontheexosphere,wind,star,maybeconnectingatmosphericescapeprobedbynearandfarUVandtheseinstruments,Courtney:AlsogoodcasetotieinsolarsystemconnectionaswellEric:Inonefigureyoucanshowcompositions,hazes,clouds,atmosphericdynamicsWalt:CertainlyforsolarsystemUVunobtainableMark:Somethingsgointoappendix.E.g.clouds.Atmosphericdynamics?Doesthatgointoappendix?Surfacesbelongshere.Canweseespectralfeaturesonbarrenplanets.Walt:Chondriticspectra.Notassmallasmercurybutcoreofevaporatedobject.Mark:Signaturecase?Or“ohbytheway”case?

Eric:Inoticeplanetarysurfacesoftemperateterrestrialatmosphereshere.Habitabilitysection?Britney:Geocaseyoucandobasalts,magmaocean.Spectrallynotsureallthatdifferent.Vikki:Ices?Britney:Almostanyicebandswampedexcept3umband.Butwecan’tgetit.Notsurewouldworkforterrestrialplanets.Bandratiospeopleuse.Iceisout.Eric:CouldyoudistinguishbetweenMarslikeandmoonlikesurface?Britney:Bandratiosgivescolor.Wehavesomefiltersontherethatmightworkforthat.Standardphotometryonthosewouldwork.Eric:Delete“temperate”fromthesurfacepartin4.4.3Courtney:Whyisthisin4.4andnotelsewhere?Fitsinto“areweunusual?”Britney:Forsolarsystemit’susefulMark:Areweunusualjustcatchallphrase.Eric:Comparingexoplanetsandsolarsystemfallsintocomparativeplanetaryscience.Directimagingcandosurfaces.Thisourfirstchancetodosurveyofdifferentsurfacetypes.Britney:Ineverlikedareweunusual.Karl:Meneither.Vikki:Biggerpictureofputtingoursolarsystemincontext.Debra:Thistitleisforcongress.Britney:Itdoesn’tdescribethesciencewell.Walt:Canweevendoit?Oursystemisnotatypicalsystemwe’llfind.We’llhavebiasesthatwon’tfocusonasystemwithnolargeplanetscloserthanJupiter.Britney:Thisishowdoplanetswork.Walt:Requireseliminatesbiasesinsample.Givenlikelihoodoffindingsystemlikeours

Eric:Wedon’tnecessarilyeliminatebiases.Weneedbiaseswecanunderstand.Probingparameterspacenotprobedbefore.IfyoulookatKeplerpopulationseeapopulationthatdoesn’tlooklikesolarsystem.Walt:WithallofourplanetsinhalfanAU,probabilityoffindingtransitingplanetsisX.IfweseeJupitertransitinsunlikesystem,youcanstarttoplaceconstraintsonprobability.Eric:Systemswithhot,shortperiodtransitingplanets.Walt:AlreadyfindingJupiters,Saturns,startingtofindterrestrials.Puttingoursystemintocontextishowsystemisorganized.IsanythingabouthowLUVOIRwilldowhatitdoesgoingtogiveusanswertothat.PuttingusincontextisifweseesystemsorganizedlikeoursordoweseesystemsorganizedlikeEarth?Britney:IthinkweshouldfindadifferentwordthanDiverse(re.asuggestiontyped“TheDiversityofPlanetarySystems”).Onethingtolistoffpossibilities.Weedsvssystemscience.Wecanlistoff9000possibilitiesofthingswecando.Doesn’thelpusunderstand.Connectionsarebetweenthisisthecontext.Ithinkthatwouldbehelpful.Don’tknowwhatthewordis.Mark:Whatareplanetaryprocessesthatwecanunderstandsystematically?Britney:WeneedcontinuumofobjectsMark:IdeaisifwestudysolarsystemwestudyourselvesBritney:Mapping30Mercuriesindetailnotuseful.Usefultoknowthey’rethere.Mark:Mappingthephasespaceofplanets.Diversepointstothat.Vikki:Comparativeplanetarysystemscience?Mark:Shewantsaquestion.Britney:Diversedoesn’thaveapoint.Mark:Whataresystematics?Vikki:Processesratherthancharacteristics.Britney:Architectures,howsystembuilt,atmosphere,chemistry.Theseprocesses.Shawn:Howdoplanetswork?Britney:WhatIsaidbefore.Isthattoosimplistic?

Courtney:Howdoplanetarysystemsformandevolve?Mark:FormtooCOR?Bekki:Wehavethatinhere.Britney:Allarbitrary.They’realwaysforming.Youcoulduseevolveifyouwant.ThatcapturesIthinkboth.Shawn:For,operate,evolveBritney:Howdoplanetarysystemsoperate?Vikki:Otherpartofexplorationistoknowdiversityofsystemsoutthere.Speakstoformationprocesses.Britney:Showcollecting.Nottellingyouanything.Vikki:Youcanminimizeittothatbutthat’snotintent.Wewanttofindsystemsdifferenttooursandunderstandwhy.Britney:ComingfromasteroidcommunityIsuggestthatnotbethestrategy.Mark:Let’stablethis.We’reoutoftime.Mainthingweneedisnotatitlebuttextandfigures.StartshootingfigureconceptstoGSFCfigurefolks.Vikki:Icantakeleadongettingchapter3done.August15deadlinegoingaround?Doweworktothat?Mark:Let’sbeinseriouslygoodshapebyAug30.GoesouttoreviewamongadvisorsOct1st-ish.Wetalkedaboutfigures.Whatelse?Courtney:Dynamicswouldbegreatmovie.LikeoneKevinStevensonputtogether.Mappingsurfacefeatures,timedependentmapping.Vikki:Notsomethingwecanuniquelydothough.Eric:Ihaveideaforaperturevsawesomeforescape.Xaxisaperture.Yaxisstellartype.Forescapeobservations,havetoprobeparticulardistance.Showwhatspecies,whatescaperatesyoucanprobeasfunctionofstellartypeandaperture.Mark:Sketchthatup.Otherthoughts?

Bekki:FigureIwanttohaveiswhatyougetforrestofsystemifyousucceedinimagingEarthintermsofzodiacaldust,otherplanetsinsystemEric:Isthismass,semimajoraxisfigure?Ravi:Angularresolutioncontrastfordifferentplants.Debra:BorrowheavilyfromexistingreportsforHDSTandATLAST.Mark:Let’spausethere.Everyonefocusongettingtextandfiguresin.---coffeebreak-----

COR & PCOS interim report spl inter session Notesnotavailable.

Design & Technology interim report spl inter session Notesnotavailable.

Preparing for Architecture B MattBolcar

• 3IDLrunsforcoronagraph,LUMOS,ONIRS,emptyfourthbay?

Kevin:OtherthanONIRShowdecidedwhichofthetwoneededtobestudiedagain?Wemightwanttoreallyaskourselveswhichneedanother.Julie:HonestlyyouwillneverflyaLUVOIRwithoutHDI.Matt:Pauseforamoment.Ihaveslides,thenwehaveanhourfordiscussion.Whatareexactlyinstrumentswewanttostudy?Laurent:GoingthrougharchitectureA,whichareeasiertoscale?Whichstudiedinmoredetail?Matt:Absolutelycoronagraph.Mustmaximizescience.“A”isLamborghini.Leonidis:CanwecallitaTeslasoit’sAmerican?Matt:Sure.BisChevyVolt(laughter;slidesays“Volkswagen”)Bertrand:Idon’twanttohearwhatHabExisonthatscale(laughter)Dave:Smaller,lesscomplex,friendlierLUMOS?

Kevin:It’sextremelyfriendly!Aki:I’mmisrememberingabouttherelativeranking.GapsbetweeninstrumentsinvoteImaybemisremembering.QuestionIwouldasktoHDIandLUMOSleadsiswhichinstrumenthastochangethemosttobeona9m?Kevin:Idon’texpectLUMOStochangealot.Whatwillchangeishowmuchbayshrinks.MyguessisLUMOSreturnswon’tchangemuchatall.Opticswillchangefigures.Hopingwedon’thavetopickupextrabounces.Shawn:Otherwaytolookatitisthereawaytostudysimplerordifferentapproach.Coronagraphastobeself-consistentwithtelescope.Tradesontableforcoronagraph.Scalesmatterbutaretherealternativeoptionsweneedtoexplore?SimplerHDI?Kevin:NotLUMOSMarc:SimplerHDI.CouldgotocriticalnotNyquistsampling.GottwochannelsMaybeyousaygetridofNIR.IrecallmainreasonHDIisbigandheavyisin15mthat’sabigbeamandwehaddoallofthosebouncestogetitdowninto6inchfilters.IthinkHDIscalesstraightforwardly.Matt:SpeakingpersonallywecouldpickeitherHDIorLUMOSandarguetheyscaledownto9m.Whichwestudycomesdowntowhichwethinkhasmostchanges.Aki:IfeelweirdwithBwithnoUVcapability.Kevin:BasedonLUMOSfromA,ifyouchangeBayside,thisissomethingIcantellyouhowmuchwillchangein2-3dayswithouttakingeveryone’stimeforanotherIDL.That’smyhunch.Brad:Wecan’tdoBwithoutUV.CORwillfeelthat’sastabinback.Matt:ImagineasingleinstrumentthatdoesUVspectroscopyandhaveimagingchannelforvisible?Brad:Isthisanotherinstrument?Matt:ThirdinstrumentcouldbeamashupofLUMOSandHDI.Aki:Thatmightbemostinterestingthingtodo.Feasible?Matt:Wehavetobecareful.Can’tdo90nm–2.5uminsinglechannel.Walt:IfmergeHDIwithanotherinstrumentshouldgowithopticalNIR.DoitwithONIRS?MeanssacrificingfiltersandFOV.

Aki:ImagingchannelinONIRS?Matt:Ianticipatedthisanyway.Weneedaguidecameraanyway.Shawn:Oh!Jason:Youguysdidn’tthinkofthat?Shawn:Theatmosphericmodelerdidn’t!Mattdid!Aki:Ifwedidn’thaveaninstrumentwithUVwe’dusedifferentcoatings.Kevin:nonoweneedIDLagain.Brad:firstparagraphdescriptionforB,wecansayyoucancountonanotherinstrumentnotstudied.Aki:Havetochoosecoatingsforthatpossibility.Brad:Thisisnotsciencedrivendecision.Matt:AllinstrumentsforAequallyapplicabletoB.Justneedtobescaled.Marc:CanIclarify:whenwedosciencediscussionforB,areweallowedtodothingslikestellarpopulationsorhighredshiftgalaxies,or100pceverywhereifwedon’thaveHDIinB?Aki:Wejusthavetobeclearaboutthis.Thiswasalwaysanissue.Mustbeclearabouttaggingsciencecaseswithinstruments.John:Allsignaturesciencecaseswillhavecurvesforeacharchitecture.Dave:Whydon’twestudycompletelydifferentinstruments?Aki:Idon’twanttocompletelythrowoutourplansoverlastyear.Brad:Scalingwillprovideinsight.Onlyonetrulydifferentiscoronagraph.Marc:WecameupwithcoresciencecasesonexoplanetsandCORsideandelementsareUVastrophysics,exoplanetcharacterization,highangularresolutionthings.Instrumentsallbasicallyinthissubset.Completelydifferentinstrumentsmeansacompletelydifferencesciencecase.Idon’tthinkyouwantthat.Dave:Ok

Shawn:safetosaywehavetodoscalingworkononenotincludedinthis(LUMOS,HDI)?Matt:Yesfirstorderopticaldesigntosay“doesitfitinthebox?”Shawn:Ifthat’sthecase,iftimeallowedandwedidthatsooner,thatmighthelpunderstandbetterhowmuchthescaleddownversionschangeAki:Goingbackagain,weneedaguidercamera,IlikeideaofmergingimagingchannelintoONIRS.Thatseemsliketheeasiestbestofbothworldssituations.ThenwekeepaLUMOSinthere.Haveimaging.Shawn:Mayenduplookinglikecoronagraph.Matt:ThirditerationiswedoLUMOSandHDIandthenacoronagraph.BecauseONIRSisfiberfedspectrometeritmaylookverysimilartooneincoronagraph.Courtney:IfwecancoversciencecasesMatt:Weputfiberfedspectrometeroncoronagraphaswell.Courtney:Mustpreserveultrahighrescapability.FullfillHDIsciencegoalsthatway.Matt:Iwillwritedownfornowincludewidefieldcapabilityinoneoftheinstruments.Ithinksomethingweshouldthinkaboutwhatmakesmostsensetoputthatin?John:Howdoesitimpactguiding?Matt:Ithinkitwillbefine.MustmakesureFOVofimagerbigenoughtoseeabrightenoughstarforguiding.

• Launchvehicledetails:liftcapacityis10,000kg• Fairingdynamicenvelope4.5x10.6m• Observatorycanweigh6650kg(~JWST!)

o InstrumentscombinedcanweighasmuchasHDIdoesRIGHTNOW!o 1330kgo ATLAST9.2mtelescopewithnoinstrumentswas7300kg.ATLASTwasnot

designedformassShawn:Anyobviousplacesyou’reawareofontelescopesideofthingstogetuslighter?Dave:Lighteroptics!Julie:GettingridofBSF

Matt:BSFisthebigthing.Thatthingisheavierthanneedstobe.Mustsurvivelaunchloadsandalsoallowforservicing.Thosetwothingsmakeitdifficult.Ifyoucangetridofstructureafterlaunchit,thathelps.Makeinstrumentsstructural.Debra:WhenthoughtaboutAandBwewantedtomaketelescopesasbigascanbetofitinfairings.Wethought9mtelescopecostswouldscaledown.Matt:IfSLScomesalongwecancertainlyfita9minthat.Brad:AnotheroptionwehaveisonorbitassemblyCourtney:Isn’tthisthesafearchitecture?Marc:No.Wasn’t9mtelescopeinsuranceagainstSLSnotexisting?Dave:Let’snotdismissthis.Wedon’tlauncharobotwithabunchofsticks.Couldmeanwehavemajorsub-assembliesthathaveasimpleinterfacethatcanbeappliedbyvehiclesthattakethemupthere.Waystothinkaboutthisthatcantrulysavemoney.Aki:HowdoesthismakeitlessriskythanA?Makesitmore.Brad:Iwouldn’tpresupposethat.Dave:Wehaveprejudicesthathaven’tbeenexplored.Brad:Needtomakesureastronomersdon’tmakeengineeringdecisions.Weneedtogetthescience.Thenwethinkaboutbestwaytogetitonorbit.Julie:GoodpointBrad.Ifthisisprioritizedbydecadal,ourjobistoshowit’sscalable.Wemustshowfeasibility.Brad:Apossibleoutcomeisthatdecadalcouldsaynotworthbuildingatelescope<12m.Doesn’tmakedramaticchange.Wehavetothenfigureouthow.Shawn:Ithinkweshouldhaveawaytodiscussthisasawaytodealwithfutureuncertainties.TryashardaswecantofitBintosingle5mfairing.Ifwegettopointoffittingwiththinnermargins,thisiswaytodiscusslaunchvehiclerisk:twooptions.Tradeuptolargerrock,tradetotworockets.Brad:Evenif9.2fitsin5mfairing,doesn’tgivemuchsciencecapability.Nottojustifyexpenses.Aki:Simplesthingistodelivertelescopewithemptybays

Kevin:Mattdoyouhavesenseofhowmissionimpossiblethesemassesare?Matt:Keepinmindwe’retalkingaboutinstrumentmassesstill50%largerthanNIRCAM.NIRCAMisprettycapable.We’reafactorof30%moremassthanweneedtobe.Notcrazy.Wecanfindthat.Notinsane.Butdifficult.ApproachforAiswegavethemablankcheckformass.Thistimewegoinsayingwemustsavemasswhereverwecan.Kevin:SlideininstrumentslikeHSTMatt:Don’tthrowbabyoutwithbathwater.Jason:IpickedbrainofJohnArenberg.TalkingabouthowtoapproachLUVOIRfrom“let’sminimizecost”perspective.HeadvisedthinkingaboutitashowmuchofJWSTcanwereuse?CloseasyoucangettoevolvingJWSTjustalittlebitalongatsamedrymass.Instrumentsmustbesamemass.Thinkaboutitthatway?Aki:WedidthinkaboutitthatwayforAeven.ReusingJWSTheritageamuchaspossible.Jason:Goodadvicegenerally.MoreclearhereforB.Casewhereyoucoulddrawreallyconcreteconnections.John:TheonethingIlikefromstrategicstand-pointiswestrategicallychoseAandBbasedofffairing.Iwanttoseesimilartodiscussiononinternationalpartnersisplaceinfinalreportshowingwedidourhomework.Cursoryanalysisofon-orbittoshowdecadalwe’vebeenmindfulofthesethings.Ifwedohomeworktoshowwaysaroundproblems,usefulforfinalreport.Getinputforpeopleinindustries.Aki:Inarchitectureoverviewchapters,hadsectionsondesignalternatives.Goesthere.Marc:LookingatoldATLAST9.2m.That7200kgnumberwasjustfortheOTAnotincludingspacecraft.Matt:Don’tthinkthat’scorrect.That’sanolderstudyyou’relookingat.Marc:Oksoyoushaved4metrictonsinfouryears.We’refine!Shawn:Keepthatdietgoing.John:OnehellofanutrisystemMatt:ATLASTstudiedin2009thatincludedaninstrumentcompliment.Thatwasaround11000kgtotal.WhatwedidsincebutbeforeLUVOIRdroppedit.Notendofworld,butwemustbecareful.

• 2approachesforB:scaleddownversionofA.Easiertodo.• OR• TreatBasbrandnewdesign.Purposelymakedifferentdecisionstomorethoroughly

exploreparameterspace.(lotsofnoddingheads)Marc:Includeoffaxis?Aki:Maybe?Matt:OSTdoing9moffaxis.Can’tfitinto5mfairing.Julie:Can’tfitintofairing.GoingtoSLS.Dave:Iadvocatefor2ndapproach.WillallowustousehigherTRLelements.Wedon’thaveconceptforedgesensorsystemtomeetrequirements.Morematureandcapablealternatives.Don’tdosamethingover.Jason:AdviceIwaspassingonfromArenbergwasclosertosecondone.EvolutionofJWST.Matt:EnoughdistinctdifferencesbetweenJWSTandus.Notquitesame.ScalingformbutnotfunctionofJWST.Dave:Youwon’tfacechallengesofBifjustdoscalingdown.Matt:Anyonehereopposedtothisapproach?(silence)Aki:WeshouldalsopollSTDTmembersnothereaswell.

• Awasa3manastigmattoprovidebigFOVbutcameatcostatlargesecondaryobscurationandreducedUVthroughput

• RecommendsBbeanRCdesign.Julie:IwastalkingtoPaulearlier.HehasmagnificentideaofallowingRCforjustUVchannelandcorrectiveopticsthatallowseverythingelsetobewideFOVMatt:2009ATLASTwasTMAtelescopewithonaxisCassegrain.ProblemisinordertogetgoodperformancecassegrainfocusFOVtiny.10”.FineforcoronagraphnotLUMOS.Kevin:OnB,IthinkwewillfindthatallofthethingsexceptHDIwillbeshrunk.ShrinkingoverallgoodFOVprobablyok.9mDave:WewilldiscusstomorrowwithMikeRogers.

Aki:Iwanttoreiteratethatthisisgoingtobehardbutdon’tpanic.Weprobablycandoit.Matt:What’sonthecoverofHitchhiker’sguide?Don’tpanic?Marc:DriverforTMAonA?Matt:FOVAki:IguessIwanttounderstand…istherereallyanychancewewillhave4themptyinstrumentbay?Matt:Potentiallychancefor4themptybay.Wemighthavevolumefor4instrumentsmaybenotmassOlivier:Estimatedoesn’tincludesecondgenerationinstruments.Lateryoucanincreasemass.Emptybaysnotstupid.Matt:YesAki:Weneedtothinkatthispoint.Notdecide.WhenyouwantustodecideonLUMOSvsHDI?Whatneedstobedecidedfirstandwhen?Courtney:Coronagraphfirst?Matt:YesJohn:ThenwedecideatOctF2FthedetailsAki:Telescopedesign?Matt:IheardnooppositiontoRC.Aki:RCitis!Courtney:Alsocoronagraphmostimportantinstrumentinsomesense.Usefultohavetimelatertofigureoutwhatmaygowrong.Shawn:Julie,whathappenedtoIDLrunsthatweremissedthelasttimetherewasagovtshutdown?Julie:We’rescrewed.Butit’donlybeinstrument#1

Matt:IfpushcomestoshovethenI’mokcanningMayoneanddoingthatinternal.Weshifteverythingdown.Aki:Neil,oranycoronagraphpeoplehere,isthatok?Canwedofirst?NeilZimmerman:StillalotofworktodoonA…Matt:Weneedtoknowbandpass,needtoknow–giveneverythingonA–whatisbandpassyouwant?WhatOWA,IWA?ExploreIFSoption.Whatresdoesitneedtobe?Julie:Prioritizeall.Prioritizechannels.Aki:Mostofthesearesciencedecisionsforexoworkinggroup.Shawn:Twochannelsatleast?Matt:YesMark:TwochannelsandIFS?Bertrand:Chancewehearaboutfiberfedspectrographapproachtomorrow?I’minterestedinhearingtomorrow.Matt:Notalotfromdesignperspective.TechniquemostlytechniqueDimitriMawetcameupwith.Webaselineinourdesignhisschemeforaligningfibers.Icantalkabout.Bertrand:Bandwidth?Matt:Scienceis15%.Bertrand:Atgiventimefiberfedaccepts15%bandwidth?Matt:Atonetime.Butmaybeabletobebroader.Iwillmakelistofthingsweneedinadvanceofcoronagraphstudy.Kevin:OtherchallengeisaftertelescopedonebothHDIandLUMOSmustbothinternallyfigureoutAki:HardestdecisiontomakequicklyisfibercouplingCourtney:IthinkwewanttoifwewanttolookformoleculesinplanetatmosphereusingSnellentechnique.Matt:IstillkeepONIRSseparateinstudy.Andthenwediscusscombiningintext.

Aki:everythingelsetobedecidedcanbedecidedexceptthis.DiscussiononcuttingoffUVandeverything>2micronsforBcoronagraphShawn:Dedicatedtelecononthis?WithexoworkinggroupandcoronagraphteamAki:Yes.AndsoonShawn:InSTDTtelecontimeslot.Aki:SecondquestionIhave:readytogowithtelescopeB?Whendowehavetotellyouwhatcoronagraphlookslike?Matt:Letmegetbacktoyou.Aki:MakesarchitectureAeasyinsomeways.Easyforus.Hardonengineers.Nownotsomuch.

Day3(WednesdayAug2,jointwithHabExSTDT)JeffBooth:Welcomesbothteams.Brad:Pleaseintroduceyourselvesagain.(peopleintroducethemselves)

Joint meeting intro ScottGaudiWanttogivebriefintotogoalsofmeeting.

• Sharetechassumptionsanddevelopments• Agreeoncommonassumptionsforoutputformeaningfulcomparisons• Identifycommonthemes,sections,plots,text,etc• Identifyrepforeachcommonsectionthatwillberesponsibleforcontinuity• Strategizeplansforreadingandcommentingoneachother’sreports• Continuegood-faitheffortstoprovidecontinuumofoptinos,notcompetition

Suggestionsforcontent:

• DifferencebetweenHabExandLUVOIR• Stateoffieldin2030s• Science• Tech

• Commonfigures,themesuseful.• Notallgeneralastrophysicsscalesmoothlywithaperture.Breakpoints.Somethings

LUVOIRcandothatHabExcan’t.Butmanyapplicationsthatscalenicelyandweshouldhighlightthem.Continuumofoptions.

• DevelopcaseformanagingtechandbringingthemtoTRL5andtohighestTRLweneedbytimemissionreadytolaunch.

• HelikesoneofTy’sfigure.Architectureindependent.ShowsSNR=10at0.55umfor12mLUVOIRforatargetat12pc,5mHabEx30hoursat7pc,etc

• EncouragespeopletoshowslideondifferencebetweenLUVOIRandHabEx.HabExexploratorymissionandLUVOIRasurveymission

Aki:Pleasedon’tcallitasurveymissionDebra:We’realsoexplorerAki:SurveyingmorestarsnotsameassurveymissionScott:Fairenough

• “Stoplightweneverfinallyconvergedupon”

• Vaguecostslide“becausewedon’tactuallyknowtheanswertothisquestion.Notreallyourjobtofigurethisout.It’stheCATE’sjobtofigurethisout.”

Shawn:Gobacktotechslide?Ihaveideaforsomething.Isthisaslidewe’representingnow?Scott:NosetasideuntilagreementShawn:InlieuofdoinginneartermmightwanttojustsayprocesstwoteamsaregoingthroughtoevaluateTRLsandworkingwithindependentgroupstoevaluateTRLlevelsmissionsareatandfedtovarioustechfundingprograms.SomelanguagelikethatwecanprobablyuseScott:NotabadsuggestionKevin:IobjecttospiritofTRLstoplightplot.IseeeverythingonHabExslideenhancingandLUVOIRrequiresallenabling.IthinkweneedmoreconsensusScott:Thisisoldversionofslide.Anewversionisappropriate.(somemorediscussiononthisslide)Scott:Iwantthistogetourstorystraight.

Aki:Everytimewelookatthisthingthat’swhathappens.Ithinktimetoletthisonego.Scott:WheneverIshowthisslidepeoplenotinvolvedloveit.Maybeweneeddifferentversionofit.Aki:Ihopeyou’renotshowingTHISslidewithLUVOIRstuffwehaven’tagreedtoScott:WeagreedatonetimeMatt:WeagreedatonepointbutthendivergedAki:OnTy’splot,nicetodobutnotquiterightbutdoesn’ttakeintoaccountIWA/OWA.Notaccurateyet.Scott:I’msurecanbeimproved.ButIlikeideaofitAki:Ijustcheckedwithourowntoolbutit’snotaccurate.Needtoworkonthatone.Scott:IlikebecausedoesindicatetradeoffsAki:SomecoloredbandstoindicatebandpasseswouldbeniceAlan:Figureworthwhileifyoumakeclearthatit’sapproximateandmoveonwithsimilarfigurethathasthingsyouwant

LUVOIR status: Science DebraFischer“Iwanttohighlightnicethingsthathappenedoverpastcoupledays”

• Cubesatstoretirerisks• ArchitectureAdone• Accretednewinternationalobservers/interest/partners.Twowanttocontribute

instrumentconceptstudyforappendix• “Goodtimetolookforfrictionpointsbetweenwhatwe’resayingforLUVOIRvsHabEx”• “killerappasweHabExishowwecanimageEarth2.0”• discussesmoleculeswecandetect• SheisuncomfortablewithExoEarthyieldasafunctionofapertureplot.Wonderingif

LUVOIRshouldbeshowingplotsthatcomparetoHabExandviceversa

Aki:(discussingtheplotofthelastbulletpoint)Thisisassumingacoronagraphforeverysingleone.Thisisa4mcoronagraphcomparison,notHabExcomparison(reExoEarthcandidatesplot).Thisisforoldeta-Earth.Withneweta-Earthallnumberswillcreepup

Bertrand:Justdetectionorspectroscopy?Aki:Partialspectroscopy.JusthittingenoughspectratotellifdetectedwaterShawn:Thisfollowsonearlierwithspectrum.Wehavetoolswe’vedevelopedandthesesimulateLUVOIR.AdaptableforHabEx.Mosteasilyforcoronagraphcase.NowChrisincludingstarshadeforyieldBertrand:ForHabExwedobroadbanddetectionwithcoronagraph.BetterIWA.1umspectroscopywedostarshadewithsameIWAat1um.Shawn:Dowehavesomethingonagendaaboutsimulations?Debra:ReallygoodoneAki:Chrisbestapples-to-applescomparison.Thesenotyieldsofrealmissions.Scott:ThesenotDRMseitherShawn:ThiswasnotScott:I’mnotuncomfortablewithyoushowingthisplot.Althoughyieldsalittlebitlowwearen’tdetectingdozensofplanetswithHabExandthat’sjustafactAki:InarelativesensethesenumbersprobablyaccurateDebra:Discussionofprecursorscience,massmeasurements,simulationsallvaluable.Dave:Whataredoingtoatleastlookatscalabilityofgeneralastrophysicsbetweenmissions?ShouldLUVOIRstuffinformcapabilitiesofHabEx?Scott:TherearemembersoftheHabExSTDTonworkinggroupsofLUVOIRandthey’vehadseveralteleconsdiscussingcommonsciencethemesandidentifiedafewcommonsciencethemes.Inbreakoutwewillsettleon3-4sciencethemesscalablebetweendifferentarchitectures.

LUVOIR status: Architecture AkiRoberge

• DesignofarchitectureAbasicallycomplete• Nothavemassmarginfor4instrumentsonB.Empty4thslot.Planningforittobe

serviceable• “shoutouttoincrediblyvaluabletechdevelopmentthathashappenedviaWFIRST

coronagraph.Weshouldallbewavingtheflagforthatmore”

• LUMOSgoesintoFUSEbandpass“majorupgradeofHSTSTISbutnotreallydoitjustice”Kevin:IobjectthatwhenpeoplehearSTIStheythinklowthroughputAki:I’lladdathingthatit’sSTISbuthighthroughput

• HDINyquistsampledat400nm• ONIRSnotyetthroughIDLandwillprobablychangesomewhatorquiteabitbasedon

discussionyesterday.Maybeimagingmodeinhere.Resmaycomedownbutincludeimagingchannel.ConsiderincludinghighprecisionRV

• POLLUXstudyisconceptthatcouldserveasasupportforfutureESAcontribution• Cangetgoodangleonthesun.CanobserveVenus!!

Vikki:(re.observingVenus)Ohmygod!Matt:“Towardsthesunnotatthesun”

HabEx status: Science ScottGaudi

• AlinaKiesslingisnowdeputystudyscientist• Characterizinga“handful”ofexoplanetEarths• Optimalmeansmaximizingscienceyieldwhilemaintainingfeasibility.“Thisisoneofthe

wayswedepartfromLUVOIR”• Adoptingaconservativeapproach.• “happytocharacterizeahandfulofpotentiallyhabitableworlds.”• Stillwanttoenablearangeofgeneralastrophysics• UVisdifficultbecausedarkandbecauseUVcoatingsanddetectors.Nominalcutoff

around250nm.

NickSiegler:ismethanenotrecognizable?Shawn:NoGiada:NotformoderndayEarth.EarlierEarthsitis.Shawn:Crosscorrelationtechniquegiveshope

• Twogeneralastrophysicsinstruments.Onetobegiventoforeigncontribution.• 250–1.8umforhighcontrastmode• stretch90nm–2um

Rhonda:UVdetectorsmaybeatTRL5

Scott:NoTRL2technologies.SixenablingTRL3technologiesneedtobeimproved.ExpectonlytwoTRL3techsbyfinalreportKevin:Onyieldyoushoweddifferentcurvesforstarshadevscoronagraph.Sameplanetsforboth?Ordifferentplanets?Scott:IthinksimilarDebra:haveyougonethroughIDL?Scott:YeahwecallthatTeam-XKeith:Fairlyanalogousandcamebackagainforsecondstarshadelook.

HabEx status: Architecture KeithWarfield

• vectorvortex6andlyotcombination• 4monaxisdesign

Nick:AssumeSLSforbaseline4m?Keith:Baseline4mwenttoSLS.Monolithtelescopefavorscoronagraphy.Pushedusto20tonsfortelescope-spacecraft.ExceedsFalconHeavy.Nick:OtheroptionhedgeagainstSLS?Keith:Evenifwecouldmakemassworkoffaxisdesigndoesn’tfit5mfairing.Needonaxisandcreativitytomakeitwork

• starshade80mand72mdesigns“prettymuchdone”• telescopedesigncomplete• “lastthingwewanttotiedownisgettingoursensingstorytogether”• “wegotongoingquestionsaboutSLS.Peopleaskisitreallygoingtohappen?”

o “It’smovingalong.”o Theyhavebuilttanks,engines,testsinUtah,billionsofdollarssunkinatthis

pointo “Fromallappearancesitismovingforward”

• considering3telescopeoptionsbutmostpromisingisoffaxissegmenteddesignthatMarshallputtogether,highheritageJWSTdesign.“Iwouldthinkofitideallyasonlystarshadeapplication.Fastandonaxis.”WantadditionalworkforDaveReddingforanotherdesignbasedonworkgoingonatJPL.

Alan:Missionlifetime?Thrusterreactionwheels?Keith:baselinelifetimeis5yearswithconsumablesfor10.ButwhenwewenttoTeamXtheysaidthethrustersusedover10years.Somethingwe’llhavetoconsider.Willplanonservicingthrusters.LowlevelofpropellantneededUnknownperson:QuestionaboutvibrationisolationKeith:Vibrationisolationexpertherelatertoday.We’lldosomecomparativeassessmentininterimreport.Contrastendtoendperformanceproductforfinalreport.Interimreportwillshowsufficientforthejob.Aki:GoingalongAlan’squestion.Areyouguysplanningtohavesecondgenerationinstrumentsortalkaboutatall?Keith:Theinstrumentbaysareoverhereinthiscoffin-shapedthingonside.Coronagraph,starshadecamera,workhorsecamera,UVspectrographunderprimary.Allintendedtobeserviceabledownline.WouldliketocompleteprimarymissionsciencewithoutservicingAki:Fixedorreplaced?Canswapinanewinstrument?Keith:Yesbuthaven’tworkedoutthedetailsShawn:Anothercoffin?Keith:AnothercoffinonsideScott:Thereareconstraints.Can’tjustdoanyinstrument.BecauseofwayM1,M2,M3are.Shawn:That’smoreclearwhenyouseeraytrace.Scott:Wehadtomakechoicesforpackagingtogetcapabilitiesandstillmaintainvolumeconstraints.Onlycandocertainbeamtocertaininstrument.Aki:okNick:CommentthatyoubuiltinflexibilitywhereyoucangowithorwithoutSLS.IfwanttoreducerisklevelcanjettisonstarshadeandworkwithcoronagraphKeith:ORanotherpossibilityisyouworkwithcoronagraphandbringstarshadelaterNick:Partofreasonwhyhybridarchitecturewaschosenbecausemoreeasilyde-scopeable.Can’ttakeoffcoronagraph

Common technologies RhondaMorgan/MattBolcarRhonda:MattandIhaveasessiontotalkaboutcommontechnologies.IwilloffertwopresentationsonloworderwavefrontsensingandmilestonesandprogressachievedbyWFIRST.Alsoatalkaboutdetectorsandwhatthestateoftheartis.

HabEx-LUVOIR common detector briefing and update ShoulehNikzad

• SummaryofdetectorbaselineforLUVOIR• StefandonesummaryforHabEx• MentionedultralowloseIR.“Needtounifyterminologyonwhatthismeans.”LUVOIR

consensusHXRGslowenough.ForHabExtalkingaboutAPDs• EQforsinglelayercoatingsachieve>50%EQ• DeltadopedsiliconarraysforhighEQ,lownoise,andstableresponse.Agnosticto

architectureofdetector• SkipperCCDinventeddecadesago.Issueswithreadouttimebutworkingonit.Options

forlownoiseUVandvisandupto1um• Newtechisquantumimagesensor.• NUVLUMOSforcosting8kx8kCMOS• IntegratingvisiblerejectionfiltersintoSIarrayafteritgetsvacuumelimination

treatment.Optimizein-bandandalsoout-of-bandrejection.Samelevelofrejectionaswithphotocathodes

• EMCCDmaturation:maturationviaacoupleofprograms.WFIRSTsprearheadingalotofthis.WorkingwithE2VforQEimprovement.Testingonaballoon.FlightwithKevinFranceonCHESS(DDp-channelCCDàhighradiationtolerance).WithWalt,hasfundedrocketforEMCCDplanin2019

• IRdetectortechnologies:o Linearmodeavalanchephotodiodeso MgCdTemostpromisingo Highgainandavalancheextremelyimportanttohavestability

Nick:WhenworkingwithBernieRaucher,hetalksaboutnotknowinglimitsofcurrentdetectors.FeelsifyoukeeppushingonhownoisecanbereducedonvariouselementsmightbereasonablesolutionShouleh:Berniedidpresentthatwork.Thereisapossibilityofitimproving.Cangetintomoredetaillater.Hadalimit.WhyalsolookedatAPDs.AlwaysachancethatTeledynewillupdateROICdesign.Ultralownoisecapabilityisneed.Bertrand:CommentonIRdetectors.(someone)Mentionedthatimprovedresultsbyfactorof10andpublishsoon

Shouleh:I’vebeenincontactwithIanBaker.Moreresultstocome.Veryoptimisticaboutpushinggainhigherwhilekeepingdarklow.Bertrand:Balancingact.Wanthighgainbutasgaingoesupdarkgoesup

Low-order wavefront sensing FangShi

• Zernikewavefrontsensing.PutsmallmodulationatfocusofPSF.Interferencebetweenlightbeingdelayedvsnotinterferesandconvertsthephaseaberrationsatpupilintointensityvariationsondetector

• Havetestbedthatmimicsflightdesign• Lineofsighterrorinjected.14masrmsdrift+CBElineofsightjitterat600rpm,72

harmonictones• Forloworderwavefrontdrifts,movestagebackandforth• Withdisturbancesoncontrastsdegradedto10^-7,withclosedloophave10^-8.OF

courseforrealoneneedbetter.• Shapedpupil4e-9• Hybridlyot1.6e-9• “bottomlineisthisthingworks”• LOWFSsensordemonstratedtolevelof0.2masandlowordermodetolevelof12pm

rmsBertrand:NoQbutastatement.Fantasticwork.Allwillbenefitfromthis.Anothersteptoputinreportistoseehowthisperformancetranslatestooursystems.Manyrequirementsmightgoup.Fang:KnowcaveatforeachsystemrequirementforLOWFSdifferent.Bottomlinemuchtighter

LUVOIR and HabEx common tech MattBolcar

• FiberfedIFS• 4highleveltech.Twoinsupportofexomissions.TRLnumbersbeingshownareour

assessmentnumbersbutinagreementofindependentassessment• Segmentphasingandcontrol.Implementedclosedloopcontrolbetweenprimarymirror

segmentsandsegmentactuators.Closingloopatthesegmenthelpsmaintainstabilityofprimarymirror

o “intentistocreatevirtualmonolith”o 622edgesensorsfor120segmentso measuredistancebetweenedges,measureshearheight,measureangleo “nottrivial”

Bertrand:whatisapproachforcontrollingphaseofindividualsegments?

Matt:LUVOIRarchitectureAisrigidibodycontrolledsegments.Notwarpingmirrors.Segmentsurfacefigureiscontrolledbystability.Makingsuretheyarestiffandthermallystable.ThosespatialfrequenciestakenoutbyDMsinsideDave:ThisafternoontechsplinterwegointodifferentapproachesandmoreononesseenhereonthatMatt:YesDavehasalotoftalkslinedup

• FiberfedspectrometerdescribedtoDmitriMalway• AdoptedWFIRSTapproachtobeingabletoputinAPLC,VVoranyothertypefor

coronagraph• Beamsplittersendslightintobothdetectorandfiber

Dmitri:Basiclabdemonstrationofguiding.Usedforinteroferemetryfor20yearsnow.InstrumentatKeckimplementingthisconcept.Bertrand:Anyissuewithbeaconsourcereflectingintosciencefiber?Dmitri:Needtoruncontinuouslyforpointingstability.

• Littleagreementoncommontechsofar• Despitelargeoverlaponsciencecaseverydifferentapproachesmeansvdifferenttech

solutions.Yettheremay(orshould)becommonrequirementsonperformance• Example:LUVOIRandHabExbaseliningEMCCDsinthecoronagraph.Dowehavesame

noiseperformance?ClaimingsameTRL?Leveragesamearchitecture/design/packaging?Ifdifferences,why?

• Alsobothusingcoronagraph.Agreedthatcoronagraphsrequirestablewavefront.Divergeonmagnitudeofstability?Spatialandtemporalfrequenciesofinterest?Whydiverging?

• “Notsayingweshouldanswerthesetoday”• identifyperformancerequirementseachmissionshares

Aki:Ithinkyouhitnailonhead.Exactlywhatweshouldbedoinginsteadofarguingaboutdetailsonstoplightchart.Weneedtotalkaboutconsistencyandunderstandingonwhatwearetryingtogettechtodo.Crucialinfomustbeconsistentinreportsandweneedtounderstanditforourownsakes.Nick:Apointwhenyouwillbeconfidentwhetheryouneedsurfaceactuationonallsegments?Bigchange

Matt:Getstoquestionofend-to-endmodelingtogetherandunderstandwhetherornotdegreesoffreedomnottocorrectthesurfacedeformations.AtGSFCdoingstopmodelingtoseedynamicdisturbance,thermaldisturbance,findcontrast.Decideifneedmoredegreesoffreedom.Questionisn’twhetherweneedthistoachievecontrast.IfwedothatdoesitmakesthingseasierintermsofINTandfabrication?Canadoptapproachwithlesscontrolbuthavetomakethingsbetterormorecontrolbutbemorerelaxed.Nick:Whattimeframe?Matt:Innextyearprobably.ProbablythecloginthepipetogetDaveinfoheneeds.KerriCahoy:Isthereastudyavailablehowthecontrastperformanceisaffectedbytargets,theirmagnitudes,andmapofstarsavailablenexttothem?Matt:Aren’tyouworkingonthat?Kerri:Yesbutanyoneelselooking?Dave:LookingnotjustLOWFSbutbecauseweneedhigherspatialfreqthanwhat’sspatiallyfilteredbyoccultingspotalsolookingatoutofbandwavefrontsensing.Trackingperformancevsintensity.Ifyouwantgiveusabrightsourceinrightspot…Kerri:WanttomotivatebeingabletodothatDave:WecanhelpwiththatBertrand:Difficultyiscoronagraphsdon’thavesamesensitivitytoaberrations.Thatsaidsomespatialfrequenciesshouldbeconsistentrequirements.HowtomakesureenoughcommunicationbetweenteamsMatt:Challengeisgettinginfoinoneplace.Seenextremestabilityrequirements.Idon’thavesolutionofhow.Ihaven’tsaidhow.Weneedtobebetteroncommunicating.Needtoexplainourmethods.FolkslikeNeilandLaurentdoingcoronagraphdesigns.ThingsDavedoing.Bertrand:Splintersessionsafterlunch.SolarSystemandGen.Astromerged---lunchbreak---

Exoplanet spl inter session NotesbyGiadaArneyShawn:Let’stalkabouttopleveldifferencesinapproachesandscienceadvantagesconveyedsoeveryoneunderstandsweremissionsdiffer.Maybetalkalittleaboutwaystocoordinate

betweeninterimandfinalreportsbroadlyingeneralsenseonsciencethemesandiftimetalkaboutdiscussingspecificassumptionsyouwanttomake.Bertrand:Beconservative?Bestcurrentestimates?Debra:Ican’tbelievedatawehavenowisreallytheanswerwhichisthatexozodilevelssohighintheseothersolarsystemswouldexpectSS1-3zodis.Really10-20?Mark:assumelognormaldistributionBertrand:LBTIresultsmustbehandledcarefully.Likelihoodcurve.For19starsatmomentwegetzodiwithmeasurementuncertainties.Debra:Chosenforlargerlevelsofzoditomakedetection?Bertrand:29observedsofarwithpreviouslyknownfarIRexcesses.Concentratingon19starswithnopreviouslyknownexcessofanykind.Probablynottimefordetailsofhowdistributionsderivedbutlotoflayersofdataprocessing.Wehavesetsofdataandshowedunderlyingdistributionofzodibrightnessislog-normal.That’stwoparametersandyoudoamaximizelikelihoodprofileestimateof1or2params.Musigma.Medianisexponentialofmu.Extrastepisifyouwantposteriorofmedianlookatotherparameters.Inprocessofreconciling.Mostlikelymedianis0iswhatIget.Shawn:whenyouanalyzedatayougetdifference?Bertrand:Slightlydiscrepantresultsatmoment.Onemightberightonewrong.Don’tover-interpretLBTIcurvessofar.Morecomingup.NothingI’veseensofartellszodisat10zodilevel.At95%confidencemedianzodiissmallerthan25.Shawn:Sameplacewithexododiaswitheta-Earthwithcommondatasetanddifferentinterpretation?Bertrand:No.Statisticaltreatment.Getthereinnextfewweeks.Foranalysisofcurrentdata.Giada:StarsinzodisurveysimilartotypesofstarsthatLUVOIRorHabExwouldbelookingat?Bertrand:Yes.ActuallywhatkindsofspectraltypesLUVOIRconcentratingon?ForHabExtwomajorobjectives.Debra:IhaveChrisstarlistonlaptop.Bertrand:WewanttodosolartypebutalsoALLofnearbymainsequencestars.E.g.nearbyAstarunlesshasfarNIRexcess

Shawn:Similarforus.Wedon’tsetupexplicitbiasesbutwedohaveobservationalbiases.ModeisinK’s.ExozodiJPLpersonwhosenameIdidn’tcatch:IftherearethingsyouneedtoknowthatIcantellyou,letmeknowandI’llfindoutifIcangetit.Bertrand:Youaskedmeafewdaysagoifit’dmakesenseifLUVOIRHabExmakesensetogetintouchwithLBTItohelpprioritizetargets.Dayorhalfdayofdiscussion?SubsetofLUVOIRteam?(noddingandagreement)Shawn:commonteammembersprobablysufficientforthis.Bertrand:Shouldopentoanyoneinterested.ProbablyinSeptember.Shawn:Infewweeksestimatescometogether?Isthatgoingtoappearsomeplace?Onarxiv?Website?Bertrand:Stevewouldliketoputnumbersintable.Wecancirculate.JPLperson:WewillbeabletocirculateBertrand:StevewantedtoincludestatementfromLUVOIRandHabExteamsonwhythesemeasurementsimportant.WithlargerapertureLUVOIRlesssensitivetoexozodiShawn:Iproposeweusethatnumberifcomingoutinafewweeksforbothteamsonexozodi.Weassume3exozodiBertrand:Chrisshowsevenifyouassumedistributionofzodiscienceyieldnottoostronglyaffected.Casewithallstarssameandcasewithlog-normalgiveaboutsameresults.3wasaguesstimate.Shawn:ShouldweusethatnumberoutofLBTIpaper?Forinterimreport?Bertrand:YesandbytimewereachfinalreportshouldhavebetterestimateJPLperson:Wewillreachgoalof35starssometimeafterDecemberLeslieRogers:whatmetricChrisDRMresultsinsensitiveto?Yieldofdetectedplants?Characterizeability?Bertrand:Somecharacterizeabilityintermsoftimeforspectra.Distanceestimatesonlyaccountsforadditionalshotnoiseforexozodi.Nottakesintoaccountclumpsandincreased

confusion.Weneedtoknowat10-20zodilevelifmedianzodilevelthatlight.ClumpsaboutasbrightasearthBekki:Howmanytargetshastimeseriesbeendonefor?JPLperson:13?14?Bertrand:Questionishowmanyobservedenoughtimestoreliablyestimatezodilevel.Muchlessthanthat.Shawn:Leslie,Bekkidoesthissoundlikeagoodwaytogoforward?Usethisorinterimreportandupdateforfinal?Leslie:YesBertrand:IndependentanalysisofdatawouldalsobegoodShawn:MaybepresentationlikewejusthadfromChris?Bekkiworkforyou?Bekki:Yes.Helpfultosaysomethingquantitativeaboutdiskstructure.Butthiswillhelp.Shawn:HavesectiontotalkaboutimplicationsofuncertaintyBertrand:won’ttellusforsurewhathappensinvisiblewhereobserving.WegetIR.Dependsongrainproperties.NeedWFIRSTcoronagraphforthisaheadofthesemissionsEric:Doyouneedtopickanominalvaluethat’sreasonablebutalsoconsidersameworstcasescenario?10zodis?Bertrand:howmanyvaluesdoweadopt?Whichone?Mostlikely?95%confidence?Shawn:needtexttodiscussDebra:TechnoteonzodistosharebetweenteamsShawn:Chrispresentationsuseful.SomethinglikethatwouldbegreatMark:Ideallyyouhavehimdoitmultipletimesformeanandplus/minusasigma.Bertrand:Confusionbiggerissuethanzodilevel.ClumpschallengeShawn:Explainthatchallengeinreport.HowwewordtheissuesDebra:LBTIbestwaytokeepmitigatingthisrisk?Suborbital?

Bertrand:experimentslimitedbybackgroundissues.Detectorbehavior.Can’tsolveDebra:We’lllearnitonskythen?Bertrand:LBTIgets35stars.Evenifdoublegetfactoroftwoonuncertainty.DougHudgins:Doesitmatterifansweris12zodisvs6zodis?Makesdifferenceintelescopedesign?Bertrand:HabExmostaffected.Ifupperlimitonmedianzodiissmallerthan10we’regood.Twothingscancomeoutofsurvey.Statisticalinfoonmedian.Secondisperindividualtargetwhat’shappeningDebra:Orasfunctionofspectraltype,ageBertrand:onethingthathappenedwithKeckNuller,stillwewereabletoidentifyusefultrends.Strongcorrelationbetweenlotofdustfarawayandlevelofexozodiincenter.IfcanconfirmthattrendwithLBTIuseful.Canpredictwhataparticularstarwillhave.Valueinfollowingupindividualtargets.Makingsurewedidn’tmissperpendiculardisks.Debra:Ididn’tevenknowboundarywherezodidoesn’tmatterBertrand:Chrissimulated4mtelescopein2012lookingatsolarsystemanalogwithEarthwithdifferentlevelsofexozodi.IneachcasetryingtoextractpointsourceofEarthandseeifcanseeit.At20zodibrightestthingyouextractisclump,notEarth.Howwecameupwithroughnumber.Giada:Needtothinkaboutdistinguishingplanetsfromdustclumps?We’vebeenthinkingaboutstarsvsplanetswithcolorsBertrand:Yesgoodidea.SpectrumshouldbesmoothDebra:Coldblackbody.Bekki:MultipleepochsyoucanseenotmovingatKeplarianvelocity.Ifyouseesomethingyoucanblameitoncanseeifinrightposition.Casewhereplanetcapturedintoresonancesandclumpsoutside?InsomecasesmultiepochshelpShawn:BertrandandBekkicommunicatecommontextbetweenreportsonthis?Bekki:SureDebra:Suchaninterestingpublicationtoo

Shawn:Moveontooccurrencerates,etaEarth,habitablezonesandotherzones.SomeoneshouldsummarizewhatChrispresentedtotwoteams.NotChrishe’sonvacation.Debra:Hetook25%etaEarthvaluefromliteratureEric:Iworryaboutdoingthat.DodgymethodsinliteratureShawn:ForHZChrishasusedconservativeHZonxaxisand1.6onyaxisupperendforsize.Onlowerendusedthecosmicshoreline.Scaleswithdistancetostar.Eric:ChriscalculatesetaEarthhimself?Shawn:UsingSAG13occurrencerates.Secondderivativeofoccurrenceratewithregardtosemimajoraxisandsize.Leslie:CompletenessandrecoverytestsnotrecoveredShawn:SAG13numbersextremelydefensibleMark:Aconstructweuse.Doesn’tmatterEric:There’sphysicallyrightandthenprocessright.ThoseSAG13powerlawsworryme.Assumesradiusandperiodseparablepowerlaws.Foultonetalnotwhatyousee.Iffitpowerlawstowholepopulationyoucouldwildlyoverestimate.Factorof2-3.Debra:Betterwaytodoit?Eric:BestIcanimaginenowissomethinglikeBurkeetal2015butlimitedtoonlythingssmallerthan1.6radiiandifyougobeyond100daysyoudon’tneedtoworryaboutplanetsbeingstrippedsub-Neptunes.Debra:So100-200daysfine?Eric:YeahandmyimpressionfromKeplermeetingiswithnewDR25candidatestheywillhavelargeerrorbarsbuthavemeaningfulconstraintforactualEarthanalogsforGandK.Debra:Timeline?Eric:IgotfromJesseChristianson.Nextyear…Debra:Butforinterimreportwouldn’tbecrazyforustouseexistingvalues.

Eric:Butwemustconsiderworstcasescenarioaswell.E.g.10%.ShowhowrobustweareagainstthatShawn:10%relativelyeasybecausewe’vebeendoingthat.Iseveryoneokwiththat?Simulationswith.1andasecondsetwith0.25?(generalagreement)Bertrand:ScottandSaranothere.Maybedifferentopinions.ButIthinktheymightagreewiththisidea.Eric:JointradiusperioddistributionworriesmeLeslie:IthinkgivenBurkeanalysisin2015,they’vedonemostcarefuljobofcharacterizingsystematics.Stillassumingbrokenpowerlawdistributionandmultipleperiods.EvenwithupdatedDR25lookingatplanetsatedgeofsensitivity.Willbeverysensitivetothemodelassumptionsmade.AnytypeofpowerlawassumptionandcharacterizationofcompletenessShawn:SpeakstonumberinHZ?Leslie:SpeakstooverallfittingofdistributiondLogPeriod/dLogRadiusEric:(showingFigure8ofFultonetal)IssueofcompletenessatEarthendForhotthingsseeoccurrencerategoingdowninsizeNorealearthanalogsinsample?MaybehotstrippedNeptunes?Leslie:Sofaroneoflowestestimateofeta-EarthfromDanFormanMacky.Gaussianprocesses.Reasonwhylowestiswhenyoutrytoextrapolateeta-Earthbeyondwheredataprovidesconstraints.SomeoneshoulddowithupdatedDR25.Shouldgivelowerlimit.Itreallyisusingoppositeextremeintermsofhowflexiblemodelisandhowmuchyouallowplanetsoutsidecategoriesofinterest.Mark:WhatdidDanget?Bekki:2%Shawn:.02plusorminusanorderofmagnitudeorsomethingBertrand:Whyflexibilitydropsestimate?Eric:radiusandsizedistributionnotindependentofeachother.Hismodelimplicitlyallowsforthat

Bekki:AtleastonepersonisredoingthisShawn:wejusthaddiscussionofhowdifferenttreatmentcanbeaslowas2%.Isthattoolow?Doesusing10%coverthoseconcerns.There’sasciencequestionandalsoaperceptionquestion.Ifwegowith2,10,25%,peoplewillassume10%isthereasonableoneBekki:Wecoulddo100%aswell.Shawn:WecouldtakeWesTraubnumberof1.05Bertrand:LetLUVOIRlookat2%case.I’mnotgonnadothat(laughs)Eric:myimpressionfromKeplermeetingisnumberofnewDR25targetswillchangesignificantlyBertrand:whenyousaywillchangesignificantlydoyoumeanerrorbarsormeanestimate?Shawn:ErrorbarswillgetsmallerEric:BasedonthenumberofnewplanetsIsawIimagineupperlimitisnotgoingtochangebutlowerlimitmightbein5-10%range.Debra:There’salottodobeforeinterimreport.10-25%isdefensible.Wecanhavewordsthatitwillberevisedinnextyear.Shawn:Weneedreallygoodjustificationforanythingelsebutthosenumbers.Ifwehavegoodjustification,weshouldmakesureSAG13incorporatesthismethod.Bertrand:10%forallspectraltypes?Eric:NotforMdwarfsShawn:FGKsBekki:MdwarfnumbersmoresecureShawn:Isuggestoneeta-EarthforFGKandoneforMdwarfs.DressingetalisgoodforMdwarfs.30-ishpercent.Nowoveralloccurrencerates.Debra:Neptune-like,Jupiter-likeetc?Shawn:Whatarecategoriesgoingtobe?Twoteamsdon’thavetoagree?Debra:Whynot?

Shawn:Oncewedefinethosetypeshowdoweestimatehowoftentheyoccur.Let’stalkabouttheboxesjustlikeHZboundariesandhowweestimatehowoftenthingsfallinthoseboxes.Bertrand:Diversityofplanetsnotjustradius,distance.Shawn:PlaceChrisstartedoffproposesboxes.LikeHZbasedonsizeanddistancefromhoststar.Doesn’tincludethingslikecomposition.Wetrytofigureoutsomewaytodivvyupphasespacetopredictsignificantdifferencesinfuturespectra.Bestthingwecameupwithisrockys,gasgiants,tweeners.Separationfromhoststariscondensationofdifferentcloudlayers.Whenyouformnewclouddeckyoutrapthatgassoremoveitsaffectsonspectrum.Thinksomethinglikebreakpoints.WetookverysimpleclimatemodelParmentiermodelandEricHebrardcalculatedseparationdistanceswherecloudscondenseasyoumovefartherout.Eric:Youdon’tneedtoworryaboutgravityeffects?Shawn:Ithinkthat’sincluded.ThisisimpactedbycompositionlikeC/O.Wedidcouplesimulations.Thatdoesn’thavehugeimpactontheboundaries.ThisislikeHZ.It’saseriesoftheoriesboundtobewronginoneifnotmanyways.Butwecandrawboxtocountinsideof.Eric:correlationbetweenmassandradiusthat’sasmallenougheffectthatyoucandrawequilibriumtemperaturelineShawn:Wesimulatedplanetsdifferentlyforeachsizebinsbutnotmultiplesizeswithinbin.Leslie:Inmassradiusspace,ifyouinterpolatedbetweenearthandJupiter,1/r^2=constant(?).Pressuredefinedbytransitdepthdoesn’tchangeasmuchasmightexpect.Shawn:Youallinfavorofcloudcondensationasphysicalprocessusedtodividebetweenplanettypes?Leslie:I’minfavorBertrand:ShouldalsobeconsistentwithalbedosLeslie:AlbedosdependonhoststarBertrand:Goodpoint.Notchangingrightnow.Shawn:ChrisusingmodelfromKerrytocalculatealbedos.Leslieyousayweshouldmakesureincludespectraltype.Leslie:TakingintoaccountdefiningHZaroundMdwarfs.Kerryshouldbeabletogenerate.(albedosfordifferentstartypes)

Eric:AomawaShieldsdoneworkGiada:Notquitesameworkwe’retalkingabouthereVikki:Diversityofplanettypestricky.Simplisticallyhigheralbedosdependingonwhichaerosolsform.Dependssomuchonactualbulkcompositionofplanet,physics.Interiorandexteriorhigheralbedos.Venusaerosolsandoutsideyougeticysurfacesandwaterclouds.Eric:WorriedaboutstrippedplanetsGiada:NotmanylikelytobestrippedplanetsinoursampleduetoIWAShawn:Planetsinoursamplenotlikelystrippedaswedon’tdoalotofM’sDebra:Starswithin10pcafew100starsputinrandompopulations.Showwhatwedetect?Canincludeinfoaboutzodi.Shawn:Forfinalreport?Notinterim?Bertram:Chrisdonesome?Shawn:Spectrallibrariesofspectra,basedonplanetpopulationstatisticsNowthereisadiscussionof“goodnessofspectrum”whichiswhereyouloseabilitytodetectdifferentmoleculesatdifferentdistances,IWAs.Alsointegrationtimes.Iwasparticipatingindiscussionsonodetailednoteshere.BasicallyVikkiandIweresayingthatyourmaindeliverableis“howwelldoIunderstandthisplanet”isdifferentfrom“doIdetectthisplanet?”Andtheinformationyouareabletogetfromanyindividualplanetvarieswithbothplanetarysemimajoraxisandalsodistanceofthatplanetarysystem.Thetypesoffiltersyouwillhaveaccesstoforcharacterizingplanetsdependsontheseparameters.SomepercentageofplanetsyouhaveaccesstoyouwillneverbeabletocharacterizewellwithLUVOIRorHabEx.Interestingtothinkmorecarefullyaboutthecaseswhereyoucansayalotmoreabouttheplanets.Discussionofpyramidfilter.Howmanystarscanyousearchforplanets(justdetectability);Rayleighscattering;etc.Eric:Iwouldn’twantseedoingthatcomparisonbutexplicitlyseparatingimpactondifferencesciencecases.LUVOIRwillhaveadvantagefornon-habitablecases.Butforhabitabilitycasemaybecloser.Bertrand:Havetoshowapyramidforeachplanettype

Shawn:Iwasgoingtosuggestwehavefollowupdiscussiontodrawlayersofpyramidbutmaybewehavefollowupmeetingofexoplanetpartsofteamsinnextfewweeks.Starttocrystallizeaswestarttodowriting.FromHabExsideverylittlewritten.IknowthisbecauseIhaven’twrittenanything.Bertrand:Ihaveviewgraphthattalkstothispyramid…Leslie:Someofthismightgetintoactualoperationalprogramforeachobservatory.Timerequiredforeachfollowupwillbearchitecturedependent.Orderingofpyramidintermsofhowimpactsoperationsmaybedifferent.Shawn:Pyramidmightbedoneinparallel.BroadbandimagesofXsystemsandcansearchforplanetsinsamenumberofsystems.NestedinthatiswhatLesliethinkingabout.Shethinkingaboutauxiliaryinformation.Ithinkhergroupthinkingmorethaneitherofteams.Leslie:PeoplecomprisingteamincludesShawnandI,Kerry,herpostdocOwen,EricNielson,KarlS,PeterP,ScottG.PeterworkingondoingaDRMtypesimulationsimilartoChrisbutforpotentialground-basedRVleadinguptoHabEx.Somesimulatedradialvelocityconstraintsonvariouscategories.Optimisticandlessoptimisticscenario.Oneaspecthisworkinggroupdoing.EricNielsonalongwithOwenandKerryforgridoftypesofplanetsdoingsomesimulationstoseeforvariousassumptionshowmanyobservationsweneedtogetcertainlevelofprecisiononorbitalsemi-majoraxis,eccentricity,orbitaverageincidentfluxonplanet.Evanworkingonthataswellfromaforwardmodelingaspectandhowtoaccountforinfointermsofplanningrevisits.Karlwritingsectiononimpactofprecursorimaging:identifyingconfusingbackgroundsources.Shawn:Revisitsfororbitdeterminationwe(LUVOIR)haven’tbeentalkingaboutmuch.We’rehopingtodowithastrometryLeslie:EccentricityoneofthethingsEricworkingonShawn:DebrayouthinksomeonefromHabExworkinggroupshouldpresentthistoLUVOIR?Debra:Yesthat’dbegreatBertrand:Chrissimulatedorbitdeterminationroughly.E.g.Howmanyplanetscanbeobservedsixtimeswithaccumulatedcompletenessabove4.Leslie:4motivatedbyEricNielsonorbitalretrieval.With4astrometricdetectionsyoucanretrieveorbitalsemi-majoraxisandeccentricityDebra:Howdoestimingofobservationsmatterintermsofphasecoverage?

Leslie:We’vediscussedatqualitativelevel.Erichasn’tfullysimulated.Takingrandomphasesorfixedcadence.Evan’sworkwillhopefullyaddress.EvanMorris:I’mworkingonobservingamontecarloofplanetsandfollowingaroundorbitatdifferentcadencestoseenotjustwhatgetscompletenessbutalsoconstraininclinationandsemimajoraxis.SeewhatdecreaseinerrorisDebra:ifhaveplanetswithdifferentperiods,wesamplelongperiodonepoorly.Can’tretrieveit.WhatamImissing?Leslie:Aslongasyoucoverathirdofanorbityoucandook.Thingsimprovewhenyoucoveranentireorbitandhaveextraconstraintonperiodaswell.BasedonEric’sinitialsimulationswesetgenerouslongperiodcutonnomorethan3xmissionduration.Wemaywanttoshortenabit.Debra:Alwayssingleplanetsystems?Leslie:Yes.Chrisalsothinkingaboutplanetconfusion.Bertrand:Requirementtodetectallplanetswithminimummass.Debra:Iloveideaofmakinggameoutofthis.AssignrandompropertiesandthenyousaypickyoustarsandseewhatyoucanrecoverShawn:FirstthingyoumentionedLeslieisuniverseofplanetsweknowofLeslie:ChrisandPeterworkingtogetheronthat.PartofgoaltoeventuallytiethatintoEric’sorbitretrievalwork.Wewillhavemoredetailedanswertohowmuchyoucandecreasenumberofrevisitstoconstrainorbit.Shawn:Goodtoincorporateintobothreports.WhodoingthatsectionofLUVOIRreport?Bertrand:(showsexampleofpyramid)GoesfromdetectiontonumberofEarthtwinsforwhichyoudetermineorbit,earthtwinsdocharacterizationinvisibleonly,thenyoucanextendtoUV,thenyoucanextendtoNIRDiscussionon“canIdetectit?”isnotmainsciencegoal.Characterizationismainsciencegoal.Butwehavetofigureoutfiducialpoints.Oxygen?Water?Whatelse?Inreportshoulddiscussthoughnotgointodetailthetoplevelthingswewoulddoonthemostinterestingtargets(e.g.lookforglint,phaseandseasonalvariations.Statisticalestimatesdoneforjust6-7detectionSummary:2valuesforEtaEarth.Technoteonzodis.Differenttypesofplanets.

Shawn:SAG13numbersforplanetsbeyondHZ?(generalagreement)

General astrophysics spl inter session summary ScottGaudi

• Hubbleconstanto OnlyadozenorsogalaxiesforwhichwehaveCepheiddistancesandType1a

SNs.IfcangooutwithlargerapertureandgetindividualCepheidsintoHubbleflowthengetmoregalaxieswithType1asupernovaandthatlinkstronger.LUVOIRlargeraperturesocangetoutfurther.Cepheidsarehotstarssogoingtoblueuseful(whythisisbetterthanJWST)

• Darkmatterpropertiesindenseenvironmentso ideatoprobedarkmatterpowerspectrumtosmallscales.Darkmatternotcold

atsmallscales?Centralstructureofdwarfgalaxiesdarkmatterdominatedshouldbeverycuspybutoftenappeartohaveacore.Canyoudowithbaryonphysics?Maybeyoucandowithdarkmatterbeingsomethingelse.Findlowsurfacebrightness,darkmatterdominatedgalaxiesinlocalgroup.Findstarsinthem,measureRVs.Mighttellsomethingaboutpropertiesofdarkmatter.Alsocangofainterandsmallermassandfurtherwithlargeraperture.

• Lifecycleofbaryonso quasarsorAGNasbacklightstoforegroundgalaxiesandprobecircumgalactic

medium.Missingbaryonprobleminlocaluniversewhereroughlyhalfofbaryonsmissingcomparedtooverallcosmicaccounting.ThoughttobewarmorhotIGM.Notalotofprobesofthisgas.Ifyoucangotofainterandhigherresyoucanprobemorehalosandlookforgasusingvariousspecies.Furtherinuvcangetmoreandmoreabsorptionlines.Oneargument/reasonforgoingtoUV.Webothhaveinstrumentsthatcandothat.FaintnessofQSOyoucanusedependsonaperture.

• Foreachofthese,commonassumptionsandcalculationmethodologiesareneededforconsistentpredictions

Solar System splinter session summary ScottGaudi

• Exospheresofplanetso atmosphericescapelongstandingproblempoorlyunderstoodo Marsparticularlystrongcase

• D/Hratioincomets“wheredidEarthgetitswater?”• SearchesforsmallKBOs.“Theydomovesoyoucan’tjustexposeforever”• Plumes/jetsfromicymoons• Aurora

o Giantplanetso Satellites

• Smallbodyvolatilityversusheliocentricdistance• Highspatialresofsmallbodies

o Satellites,impactcraters,etc.Debra:Alsoconsidering30-mtelescopesfromground?Britney:Theseareones30-m’scan’tdoKarl:QuestiononEuropaplumes.Europaclippercomingup.WanttoknowwhatourscienceisinadditiontothatBritney:Clipperdoesaflybyeverytwoweeks.NotalwaysabletoviewEuropa.Geysersnotalwayson.Whetherclipperisthereornotcandoobsfromgroundnotfromspacecraft.Continuingonfollowingmissionsgoingtohappen.Surfacechangeandotherdynamicscan’tbelookedforwithoutthiscapability.2022launch.2026-2029arrivalatJupiter.Twoyearslaterprimemissionoftwoyearsplus.Maybecontemporaneous.LargeLUVOIRyouget10kmorbetterresonsurface.Youcanlookforsurfacechangetofigureoutwheretoputalander.Gets42flybysinprimemission.Scott:FlybystonotspendtoomuchtimeinJupitermagnetosphereBritney:YeahbutalsoreturnmoredatasincenotinEuropaeclipseatthattimeAki:Howareyougoingtohandletheseinyourreport,Scott?SolarSystemchapter?Boxes?Scott:Subsectionofsolarsystem.Commontopicseitherexacttextinreportsorboxeswecalloutorprettyfiguresthatscalewithapertureormaybeboth.Walt:Oneotherthingisthepre-scienceyougetbyhavingboresightedfocalplanesforexoplanetsystemsforverylongtimes.Candodeepfieldsfardeeperthananythingwe’vedonebeforeforeverytarget.

Exoplanet spl inter session summary GiadaArney

• Lotsofdiscussiononeta-EarthbutpeoplegenerallysettledonusingSAG-13and10%astwovaluesforFGKsfor“median”and“conservative”cases,plusCourtney’sworkforMdwarfsforthatpopulation

• Scottwasconcernedaboutchangingeta-Earthvaluesbetweeninterimandfinalreport.Generalconsensusseemstobetowaitforthenewestimatestocomeoutandthendecidewhattodo.

• Livelydiscussiononthe“pyramidfilters.”ScottGaudiseemstobesuggestingaverysimplepyramidfordetectionandcharacterization(twotierpyramid).LUVOIRschememaybemorecomplex.Possiblyneedaflowchartinadditiontoapyramid.Scott

concernedaboutgoingdownrabbitholes.Butatleastdiscussingthechallengesisthemosthonestapproachsinceplanetsarecomplicated

• Lotsofinterestinexozodiandwhenwe’llgetbettervalues.Akinotconcernedaboutclumpssincetheyhavedifferentcolors/spectracomparedtoplanets.

Tech spl inter session summary DaveRedding

• VVcorodesign• Othercoronagraphs• Smallsecondary9mLUVOIR• ThrusterRCS• MET• Edgesensors• ConcurrentWFSC

Wrap-up discussion Karl:Questionforco-chairsofstudies.Lotsofthingswewanttocoordinate.Niceiflistofthosetoremindusall.Interestedinalsocoordinatingdiscussionofprecursorobservations.Shawn:Atriskofgivingusmoreworkbecausechairsandstudyscientistsbusywhatifcrossteammembersassemblethatlist?Me,you,Olivier,andChrisisdefacto.Scott:Leealittlebusieratmoment.Lotsofdecisionstocoordinateneedtoactuallycoordinate.Ithinkstartingoffwithlistishelpful.Canyoustartassemblinglisttonight?OtherthingIrecommendisfindapointpersonofwhoeveriswritingthatsectionofreportandcoordinatewithwhoeveriswritingthatfortheotherteam.Aki:Tomakeeasier,let’sswapoutlines.Ouroutlinehasnameassignmentsonwhoisdoingwhat.Scott:GiveoutlinestoKarlandShawn.Wehavetoactuallyfilloutlinefirst.LUVOIRfolksyou’redonewe’rejustgettingstarted.Aki:Bysomedefinitionsofdone.Scott:Wellyou’redonewithyourmeeting.Forleadsofworkinggroupsalsoonusonthemtomakesurecommunicationhappensaswell.Betweenthosethreewaysofmakingsurethesecoordinationshappenhopefullyhavebasescovered.Othersuggestionsaboutcoordination?Karlyoumentionedtopicwemissedisprecursorobs.Aki:Let’sreaddocumentfirstandthenjointteleconinafewweeks.

Scott:LesliementionedLUVOIRteamnotyetthoughtaboutauxiliaryinformation.Auxiliaryinfohasbiweeklytelecons.IfsomeonefromLUVOIRwantstojoinletusknow.Karl:I’monthatalready.Scott:Othercomments?Aki:Drinks?Scott:UsefulwesettleduponvalueonetaEarth.Kindofamazing.Othergooddecisionsaboutcoordinationmade.Thankyou.Debra:ThankyoueveryoneAki:ThankyouJPLandJeffBoothforlovelyhostingasusual.Wedon’tgetBrieatGSFC.