Westerbork Netherlands Dedicated Gbit link Onsala Sweden Gbit link Jodrell Bank UK Dwingeloo DWDM link Cambridge UK MERLIN Medicina Italy Chalmers University of Technology, Gothenburg Torun Poland Gbit link 3 rd EVN-NREN Meeting Steve Parsley, JIVE,

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 Outline Proof of Concept Project – Review of Progress Timeline Milestones Connection status Next six months FP6 IST proposal

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 Project Timeline You are here Low data rate astronomy Transatlantic real-time fringes

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 eVLBI Milestones (since 2 nd 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

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 Jodrell Bank UK Onsala Sweden Medicina Italy Torun Poland Effelsberg Germany Westerbork Netherlands Telescopes connections JIVE 1Gb/s 155Mb/s MERLIN Cambridge UK 2.5Gb/s 1Gb/s MERLIN e ? ? ? ? ?

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 Outline Proof of Concept Project – Review of Progress Timeline Milestones Connection status Next six months FP6 IST proposal

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th 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.

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th 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)

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th 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

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 Outline Proof of Concept Project – Review of Progress Timeline Milestones Connection status Next six months FP6 IST proposal (see separate presentation)

3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 Thank you