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3 rd EVN-NREN Meeting Steve Parsley, JIVE, [email protected]. Gbit link. Chalmers University of Technology, Gothenburg. Onsala Sweden. Gbit link. Torun Poland. Jodrell Bank UK. Westerbork Netherlands. Dedicated Gbit link. MERLIN. Dwingeloo DWDM link. Cambridge UK. Medicina Italy. - PowerPoint PPT Presentation
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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 astronomyTransatlantic 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
MERLINCambridgeUK
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