hiciao : high contrast instrument for next generation adaptive optics for subaru 8.2m telescope
DESCRIPTION
HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope Based on a previous Japan/MEXT grant (Tokutei) PI & CoPIs: Motohide Tamura (NAOJ), Klaus Hodapp (UH), Ryuji Suzuki (NAOJ; now TMT) - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/1.jpg)
HiCIAO: High Contrast Instrument for next generation Adaptive Optics
For Subaru 8.2m telescope Based on a previous Japan/MEXT grant (Tokutei) PI & CoPIs: Motohide Tamura (NAOJ), Klaus
Hodapp (UH), Ryuji Suzuki (NAOJ; now TMT)Combined with the curvature-sensing AO with 188 elements (Hayano, Takami et al.) and SCExAO1024 upgrade (Guyon, Martinache et al.)Commissioned in 2009 (including Princeton/MPIA teams for angular differential imaging and commissioning)
Specifications and Performance 2048x2048 HgCdTe and ASIC readout Wavelengths: 1 – 2.5 microns (NIR) Observing modes: DI, PDI (dual beam), SDI (qua
d beam), & ADI; w/wo occulting masks (>=0.1")
Contrasts: 10^-6 at 1", 10^-4 at 0.15" (SDI)
Subaru/HiCIAO
![Page 2: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/2.jpg)
Direct Imaging (DI) mode
Angular Differential Imaging (ADI) mode
20”
Polarization Differential Imaging (PDI) mode
10”
Spectral Differential Imaging (SDI) mode
5”
Observation modes of HiCIAO
Camera
Wollaston Prism
MovieByThalmann
![Page 3: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/3.jpg)
3
HiCIAO PDR Design
![Page 4: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/4.jpg)
4
HICIAO + Fore-Optics
Connectors are mounted on a large Sub-Plate to facilitate access to cables through the VJ
Main access to inside of Cryostat is via VJ Top Cover: Weight ~10 kg
HICIAO Fore-Optics;Mounts to AO-Bench
3 mm clearance between Fore-Optics and VJ
![Page 5: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/5.jpg)
5
3mm Gap betweenHICIAO VJ and Fore-Optics Assembly
AO-Bench Interface Plate (Subaru-design); to match up with holes on dowel pins to this face
Fore-Optics is decoupled from Vacuum Jacket!
![Page 6: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/6.jpg)
6
![Page 7: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/7.jpg)
7
VJ Bottom Plate
V-Truss Assembly (Qty=4)
Starting point for HICIAO Assembly Sequence
![Page 8: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/8.jpg)
8
V-Truss Light Shield
Optics Bench
Brass Slides Qty=3
1) Brass Slides permit slight adjustments along the optical axis
2) For Assembly, use shims in places indicated
Cutouts for Detector Assembly
Note: Lip on the Optics Bench for Light-Seal
Place Shims here
![Page 9: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/9.jpg)
9
Common Path Filter Wheel Assembly (CPFW)
Shim Location
Install Light-Tube-1 to CPFW
Use .344 inch thick shim to locate CPFW to nominal position; place shim between Filter cover and inside of Optics Bench
![Page 10: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/10.jpg)
10
Pupil Wheel Assembly (PW)
Light-Tube-1
Install Light-Tube-2
Slide PW up flush against Light-Tube-1
![Page 11: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/11.jpg)
11
Detector Assembly
Add Detector Assembly: It must be installed prior to the Differential Path Filter Wheel (DPFW)
Prepare ASIC Flex Ribbon Cable as shown
![Page 12: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/12.jpg)
12
Tongue Light Shield
Light-Tube-2
To keep the Optics Path light tight, a Tongue & Groove design interface is used for the 2 marked parts; the Tongue Light Shield must be inserted before the DPFW
Bottom out against Light-Tube-2 prior to inserting DFPW
![Page 13: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/13.jpg)
13
Filter Wheel Case
DPFWOnce DPFW is installed, bottom out Tongue Light Shield on Filter Wheel Case and secure with 2 screws
Tongue Light Shield
![Page 14: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/14.jpg)
14
Assembly: Closed Cycle Cooler and 1st Stage Strap to Vacuum Jacket
![Page 15: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/15.jpg)
15
1st Stage Strap(compliant)
1st Stage Strap is composed of .12mm thick Copper Foils and bent into the configuration shown to cancel out vibrations from the 1050 CTI Cold Head
9x ¼-20 Socket Head Caps with Washer
![Page 16: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/16.jpg)
16
Clamp type design to secure the 1st Stage Strap to the Optics Bench; screws are located on the inside of the Optics Bench (previous slide)
![Page 17: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/17.jpg)
17
VJ Lower Body
Connectors and Connector Sub-Plates should be installed AFTER the VJ Lower Body has been bolted in place!
Evacuation Valve; Rotates through 360 Deg
Hex Socket Head M6 x 2525 Required
![Page 18: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/18.jpg)
18
Prepare Radiation Shield as shown in this slide; add to Assembly
S.H.C.Vented 6-32 x 5/8 32 Required
![Page 19: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/19.jpg)
19
Radiation Shield without Shield Top Plate
Note: This assembly state should be used to wire up the instrument
![Page 20: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/20.jpg)
20
Getter Shield attached to Radiation Shield Tube
CTI Cold Finger will slide through the inside of the Getter Shield
1st Stage Strap
![Page 21: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/21.jpg)
21
Closed Cycle Cooler Assembly
2nd Stage Getter Assembly
Vibration Isolation Mount
CCC Mount Flange
CTI 1050Cold Head
Cold Wire to Detector
Safety Finger Qty3
Prior to Vacuum, the CCC Cold Head is loose. After Vacuum is appliedCold Head is compressing the 2 Isolation Rings (Rubber);3 Safety Fingers limit the motion of the Cold Head with no Vacuum
1st Strap Access Cover
![Page 22: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/22.jpg)
22
Access Hole in CCCMount Flange; used to bolt 1st Stage Strap to CCC Cold Finger
1050 CTI Cooler assembled to Vacuum Jacket
Use these Screws to limit movement of CCC Cold Head when not under Vacuum; 3 Places
![Page 23: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/23.jpg)
23
Changing Filters;Lenses etc
![Page 24: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/24.jpg)
24
Access Covers to Filter/Lenses
Hall Sensor Mount
This and next slide show state of disassembly necessary to perform maintenance and change filters/sensors/lenses etc.
![Page 25: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/25.jpg)
25
View into open Cryostat: Entrance Window at Right
![Page 26: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/26.jpg)
26
HICIAO Installation on NASMYTH
1. After PDR, Fore-Optics and Vacuum Jacket became 2 independently mounted assemblies
2. Wollaston Prism is close to Vacuum Jacket for optical performance reasons
3. Must protect Wollaston Prism from possible collision with Vacuum Jacket upon installation
4. Next slides discuss new design for mounting procedure of Fore-Optics and Vacuum Jacket on Nasmyth Floor
![Page 27: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/27.jpg)
27
Front Back
Common Path Filter Wheel
For more Details: See PDR Document 3.2.2.3.6Cover shown partially transparent
Dowels lineup unit perpendicular to Optics Bench Mounting surface
![Page 28: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/28.jpg)
28
Mechanism Registration: Brass Slides permits parallel, limited translation along the optical axis
Filter Wheel Case Holder
Slotted Holes; allow limited adjustment along the optical axis
![Page 29: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/29.jpg)
29
Detent
Filter Wheel Cover removed
Geneva Wheel 12 positions
Cam & Driver Assembly
Hall Sensor
Magnets in Wheel
Filter Cell
Detent Spring
![Page 30: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/30.jpg)
30
Bearing Mount
PHYTRON CRYO-Motor
Filter Access Cover; held in place with leaf spring
Gear TrainRatio 8:1
Hall Sensor
![Page 31: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/31.jpg)
M. Tamura (NAOJ),and
SEEDS/HiCIAO/AO team
M. Tamura (NAOJ),and
SEEDS/HiCIAO/AO team
Strategic Exploration of Exoplanets and Disks with Subaru (SEEDS)
Strategic Exploration of Exoplanets and Disks with Subaru (SEEDS)
![Page 32: HiCIAO : High Contrast Instrument for next generation Adaptive Optics For Subaru 8.2m telescope](https://reader035.vdocument.in/reader035/viewer/2022062309/56815a9b550346895dc81a83/html5/thumbnails/32.jpg)
32
Linear Polarization Map of the T Tauri Star UX Tau BTaken with HiCIAO as part of SEEDS