3 rd EVNNREN Meeting Steve Parsley JIVE parsleyjive

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

Outline • Proof of Concept Project – Review of Progress • Timeline • Milestones • Connection status • Next six months • FP 6 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

e. VLBI Milestones (since 2 nd EVN-NREN Meeting) • January 2004: Disk buffered e. VLBI session: • Three telescopes at 128 Mb/s for first e. VLBI image • On – Wb fringes at 256 Mb/s • April 2004: Three-telescope, real-time e. VLBI session. • Fringes at 64 Mb/s • First real-time EVN image - 32 Mb/s. • September 2004: Four telescope real-time e. VLBI • Fringes to Torun and Arecibo • First EVN, e. VLBI Science session • January 2005: First “dedicated light-path” e. VLBI • ? ? Gbyte of data from Huygens descent transferred from Australia to JIVE • Data rate ~450 Mb/s 3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005

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

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

http: //www. jive. nl/ist 2004/ 3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005

Telescopes connections Westerbork Netherlands Onsala Sweden 1 Gb/s 2. 5 Gb/s 155 Mb/s Effelsberg Germany ? ? ? 1 Gb/s JIVE Jodrell Bank UK e. MERLIN Cambridge UK 3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005 Torun Poland 1 Gb/s Medicina Italy

Outline • Proof of Concept Project – Review of Progress • Timeline • Milestones • Connection status • Next six months • FP 6 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 > Po. C target of 512 Mb/s. • Correlator/Mark 5, e. VLBI robustness issues. • e. VLBI 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 e. VLBI 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 7 th 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 128 Mb/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 • FP 6 IST proposal (see separate presentation) 3 rd EVN-NRAN Meeting – Schiphol, Amsterdam – 28 th January 2005

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