westerbork netherlands dedicated gbit link onsala sweden gbit link jodrell bank uk dwingeloo dwdm...
TRANSCRIPT
WesterborkNetherlands
Dedicated
Gbit link
OnsalaSweden
Gbit link
Jodrell BankUK
DwingelooDWDM linkCambridge
UK
MERLIN
MedicinaItaly
Chalmers University
of Technolog
y, Gothenbur
g
TorunPoland
Gbit link
3rd EVN-NREN MeetingSteve Parsley, JIVE,
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Outline
• Proof of Concept Project – Review of Progress• Timeline• Milestones• Connection status
• Next six months• FP6 IST proposal
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Project Timeline
You are
here
Low data rate astronomy
Transatlantic real-time fringes
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
eVLBI Milestones (since 2nd EVN-NREN Meeting)
• January 2004: Disk buffered eVLBI session:• Three telescopes at 128Mb/s for first eVLBI image• On – Wb fringes at 256Mb/s
• April 2004: Three-telescope, real-time eVLBI session.• Fringes at 64Mb/s• First real-time EVN image - 32Mb/s.
• September 2004: Four telescope real-time eVLBI• Fringes to Torun and Arecibo• First EVN, eVLBI Science session
• January 2005: First “dedicated light-path” eVLBI• ??Gbyte of data from Huygens descent transferred
from Australia to JIVE• Data rate ~450Mb/s
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
http://www.jive.nl/ist2004/
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Jodrell BankUK
OnsalaSweden
MedicinaItaly
TorunPoland
EffelsbergGermany
WesterborkNetherlands
Telescopes connections
JIVE
1Gb/s
1Gb/s
1Gb/s
155Mb/s
MERLIN
CambridgeUK
2.5Gb/s
1Gb/s
MERLINe
?????
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Outline
• Proof of Concept Project – Review of Progress• Timeline• Milestones• Connection status
• Next six months• FP6 IST proposal
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Next Six Months• Objectives
• Induction of Jodrell/Cambridge and Medicina when high speed links are ready.
• Expansion of the array to seven telescopes: Ar, Cm, Jb, Mc, On, Tr, Wb
• Higher data rates > PoC target of 512Mb/s.• Correlator/Mark5, eVLBI robustness issues.• eVLBI Logistics: FS and correlator-control
coordination for smooth operations.• Alternative protocol development and testing - viz.
work underway at Jodrell Bank and JIVE• Integration of Haystack e-VLBI products: VSI-E,
network monitoring tools.• Transatlantic eVLBI and dedicated light paths.
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Next Six Months
• Dates for Scheduled e-VLBI tests and demos• 10 Feb - (not Onsala)• 11 March - (science demo)• 24 March• 28 April • 26 May• 7th July (not Onsala)
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Science Demo – 11 March
• Cm, Jb,On, Wb, Tr, (Mc?)• Continuum source• 128Mb/s• First trial of “dynamic scheduling”:
• Test several sources for suitability• Observe brightest
….not possible with standard VLBI
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Outline
• Proof of Concept Project – Review of Progress• Timeline• Milestones• Connection status
• Next six months• FP6 IST proposal (see separate presentation)
3rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28th January 2005
Thank you