Fwd: EVNtech: demo at APAN, press release and fringe plots
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From: <Chris.Phillips_at_email.protected>
Date: Wed, 29 Aug 2007 12:07:48 +1000
I thought you would all be interested...
Begin forwarded message:
>From: Arpad Szomoru <szomoru_at_jive.<!--nospam-->nl>
>Date: 29 August 2007 12:52:30 AM
>To: EVNtech_at_jb.<!--nospam-->man.ac.uk
>Subject: EVNtech: demo at APAN, press release and fringe plots
>
>Hi all. Today a demo was held at the APAN (Asian Pacific Advanced
>Network)
>meeting in Xi'An, involving quite a number of EVN partners. In this
>demo
>we switched between between observing one source (bright
>calibrator) with
>Shanghai, Mopra and ATCA, and another source with Shanghai, Torun,
>Darnhall, Jodrell Bank, Westerbork and Medicina (although Mc could
>only
>send formatter data), and correlated the data in real-time at JIVE.
>
>The data rate was a modest 256 Mbps (we have pushed data from Sh
>and Mp at
>512 Mbps), but we felt that the short duration of the demo (30
>minutes)
>and the increased chance of failures at higher data rates do not
>make a
>good combination. Besides, we have only one lightpath from
>Australia, and
>sending 512 Mbps with TCP (even CTCP) over the routed network is not
>really feasible. As it happened, this time we could not even get
>256 over
>the routed network, which pleased some proponents of lightpaths no
>end.
>This meant that we could not correlate any data from ATCA.
>
>The demo followed immediately on the talk about EVN and e-VLBI by
>Huib van
>Langevelde, so interest was quite keen, and we managed to get our
>first
>fringes on display within minutes of the first spectators arriving.
>As an
>extra bonus, at the end of the run we managed to get fringes from
>one of
>the sources between Mp and several European telescopes (see attached
>fringe plot) for a short time. Certainly some of the longest (Earth)
>baselines ever..
>
>Attached is the press release that JIVE has sent out, and a few fringe
>plots.
>
>Regards, Arpad
>
>
>----------------------------------------------------------------------
>
>Arpad Szomoru, Head Data Processor Research and Development, JIVE
>
>Joint Institute for VLBI in Europe tel. +31521596509/596500
>PO Box 2 mob. +31650502091
>7990 AA Dwingeloo fax +31521597332
>The Netherlands szomoru_at_jive.<!--nospam-->nl
>
>
>----------------------------------------------------------------------
<div>
Received on 2007-08-29 12:08:11
Date: Wed, 29 Aug 2007 12:07:48 +1000
I thought you would all be interested...
Begin forwarded message:
>From: Arpad Szomoru <szomoru_at_jive.<!--nospam-->nl>
>Date: 29 August 2007 12:52:30 AM
>To: EVNtech_at_jb.<!--nospam-->man.ac.uk
>Subject: EVNtech: demo at APAN, press release and fringe plots
>
>Hi all. Today a demo was held at the APAN (Asian Pacific Advanced
>Network)
>meeting in Xi'An, involving quite a number of EVN partners. In this
>demo
>we switched between between observing one source (bright
>calibrator) with
>Shanghai, Mopra and ATCA, and another source with Shanghai, Torun,
>Darnhall, Jodrell Bank, Westerbork and Medicina (although Mc could
>only
>send formatter data), and correlated the data in real-time at JIVE.
>
>The data rate was a modest 256 Mbps (we have pushed data from Sh
>and Mp at
>512 Mbps), but we felt that the short duration of the demo (30
>minutes)
>and the increased chance of failures at higher data rates do not
>make a
>good combination. Besides, we have only one lightpath from
>Australia, and
>sending 512 Mbps with TCP (even CTCP) over the routed network is not
>really feasible. As it happened, this time we could not even get
>256 over
>the routed network, which pleased some proponents of lightpaths no
>end.
>This meant that we could not correlate any data from ATCA.
>
>The demo followed immediately on the talk about EVN and e-VLBI by
>Huib van
>Langevelde, so interest was quite keen, and we managed to get our
>first
>fringes on display within minutes of the first spectators arriving.
>As an
>extra bonus, at the end of the run we managed to get fringes from
>one of
>the sources between Mp and several European telescopes (see attached
>fringe plot) for a short time. Certainly some of the longest (Earth)
>baselines ever..
>
>Attached is the press release that JIVE has sent out, and a few fringe
>plots.
>
>Regards, Arpad
>
>
>----------------------------------------------------------------------
>
>Arpad Szomoru, Head Data Processor Research and Development, JIVE
>
>Joint Institute for VLBI in Europe tel. +31521596509/596500
>PO Box 2 mob. +31650502091
>7990 AA Dwingeloo fax +31521597332
>The Netherlands szomoru_at_jive.<!--nospam-->nl
>
>
>----------------------------------------------------------------------
<div>
- text/plain attachment: JIVE_AuCnEu_tech.txt
- application/octet-stream attachment: apan.png
- application/octet-stream attachment: apan_sh.png
