From cwalker@aoc.nrao.edu Mon Jun 20 17:21:48 2005 Received: from revere.aoc.nrao.edu (revere.aoc.nrao.edu [146.88.1.15]) by mail.mpifr-bonn.mpg.de (8.8.8p2+Sun/8.8.8) with SMTP id RAA06050 for ; Mon, 20 Jun 2005 17:21:55 +0200 (MET DST) Received: from [146.88.3.190] (eolus.aoc.nrao.edu [146.88.3.190]) by revere.aoc.nrao.edu (8.11.6/8.11.6) with ESMTP id j5KFLnk02531 for ; Mon, 20 Jun 2005 09:21:49 -0600 Message-ID: <42B6DF0C.5020904@aoc.nrao.edu> Date: Mon, 20 Jun 2005 09:21:48 -0600 From: Craig Walker User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040806 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Walter Alef Subject: Re: Action items from Jodrell TOG meeting References: <200506131657.57444.walef@mpifr-bonn.mpg.de> In-Reply-To: <200506131657.57444.walef@mpifr-bonn.mpg.de> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-MailScanner-Information: Please contact postmaster@aoc.nrao.edu for more information X-MailScanner: Found to be clean X-MailScanner-SpamCheck: not spam, SpamAssassin (score=-6.7, required 7, BAYES_01 -5.40, EMAIL_ATTRIBUTION -0.50, IN_REP_TO -0.37, QUOTED_EMAIL_TEXT -0.38, REFERENCES -0.00, REPLY_WITH_QUOTES 0.00, USER_AGENT_MOZILLA_UA 0.00) Content-Length: 2437 X-Spam-Checker-Version: SpamAssassin 2.64 (2004-01-11) on pc193.mpifr-bonn.mpg.de X-Spam-Level: X-Spam-Status: No, hits=-4.9 required=4.0 tests=AWL,BAYES_00 autolearn=ham version=2.64 Status: RO X-Status: O X-KMail-EncryptionState: N X-KMail-SignatureState: N Walter Alef wrote: > Hi Craig, > > There are 2 action items on you from the TOG meeting at Jodrell Bank: > > Action Item 21: Walker to check out the status and report on the use of > extended bar codes in TRACK. I believe that this item is no longer a problem with the new version of TRACK. Jon is working with the correlators on the necessary updates to the data base. > > Action Item 23: Walker to enquire of NRAO whether Noto could send disk packs > to Socorro in the February session since they no longer have a tape recorder. So far, we have not played back Mark5s from field system stations, except in a test with the geodesy community. That test revealed some log reading problems. Those problems were overcome, but we want a smoother system for operational situations. It is clear that we should make more tests and be sure that we can deal with such recordings before we try to correlate any non-VLBA Mark5 stations. Assuming such tests are done successfully, we can try to support some foreign Mark5 units. We are likely to have 1 extra playback, and maybe more, for each global session. Also someone, probably the PI, could choose to leave out VLBA Mark5 stations in order to support extra global Mark5 stations, if they so desire. This could be done before the observations are made, or, maybe better, afterwards when failures and bad weather can be taken into account. The conversion of the VLBA to Mark5 at 128 Mbps should reach 8 stations in 2005 and be completed in 2006. Then we will be trying to expand the disk pool to allow higher bit rates and to add playbacks to the correlator to support global observations. But the source of funding for this is not at all clear at this time, nor it the relative priority of disks vs playbacks. Cheers, Craig > > Could you please send me a few lines about the status of the actions? I guess > that action item 21 can be regarded as obsolete as we have extended track > now. What about the 2nd one? Any chance for Noto disks at your correlator in > the future. -- --------------------------------------------------------------------- R. Craig Walker Array Operations Center cwalker@nrao.edu National Radio Astronomy Observatory Phone 505 835 7247 P. O. Box O Fax 505 835 7027 Socorro NM 87801 USA ---------------------------------------------------------------------