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76-m Lovell Telescope Jodrell Bank, UK

Even big telescopes see no more detail than the naked eye. … but network provides 50 x more detail than Hubble Space Telescope. 76-m Lovell Telescope Jodrell Bank, UK.

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76-m Lovell Telescope Jodrell Bank, UK

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  1. Even big telescopes see no more detail than the naked eye … but network provides 50 x more detail than Hubble Space Telescope 76-m Lovell Telescope Jodrell Bank, UK High bandwidth data transfer- the future of European radio astronomyS. GarringtonJodrell Bank Observatory U.Manchester/e-MERLIN UKon behalf of the European VLBI Network (EVN) • New astronomical discoveries demand greater resolution and sensitivity • Telescope networks provide resolution … but sensitivity limited by tape recording • At faintest levels, radio sky teems with galaxies • Radio emission comes from birth and death of stars, often hidden by dust from optical telescopes

  2. Demonstrations using Géant • Rapid move to disk buffering (MIT, JIVE, Metsahovi) at 0.5, 1 Gb/s • High-speed transfer is next • European demonstrations using GEANT core network • specialised transfer s/w using UDP • iGrid2002: Tape/Disk 500 Mb/s transfer Man-Ams 24/09/02 • First disk-disk test Jodrell Bank(UK)-Westerbork(NL) 24/10/02 data transferred via SJ4/Geant/SURFnet correlated at JIVE within hours • S Parsley (JIVE), • R Hughes-Jones, • R Spencer, P Burgess (Manchester)

  3. Dante/EVN Proof Of Concept • Network requirements • 5 or 6 telescopes connected at 1-2 Gb/s each • Real time transfer to correlator at Dwingeloo NL • Continuous transfer for 24hr observations • Agreed in principle by Dante/NRENs • Local loops being pursued now in UK, DE, NL, SWE, IT, PL • Expect science results by Nov 2004 • Future usage (2005) • Routine operation for up to 16 telescopes across Europe & China at 1 Gb/s for ~50 days/yr • Rapid response to transient events (eg GRBs, SNe) • Link to UK e-MERLIN network and global VLBI network With a new correlator (>2007) 40 - 80 Gb/s per telescope

  4. Future Network • Strong scientific and technical motivation for e-VLBI using research networks • flexibility & immediate response • reliability & faster development • greater sensitivity via bandwidth • Plausible network connections to all EVN telescopes via Géant local loops going in now • Real-time demo by 2004 1 Gb/s from 5 telescopes • Processed observations ~ TB/day • remote access/processing on the GRID: Virtual Observatory GEANT + NRENs can enable ‘always-on’ radio telescope across Europe High bandwidth connection will allow us to exploit true potential of distributed network of European radio telescopes (and radio astronomers!)

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