<font face="Verdana, Arial, Helvetica" size="2">Amy Mioduszewski updated #11045<br />
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<div style="margin-left: 40px;">Status: Open (was: Response Overdue)</div>
<div style="margin-left: 40px;">Reply due: 27 September 2017 11:14 AM (was: 29 September 2017 11:20 AM)</div>
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BB379 - amplitudes very low on EB<br />
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<div style="margin-left: 40px;">Ticket ID: 11045</div>
<div style="margin-left: 40px;">URL: <a href="https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/11045">https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/11045</a></div>
<div style="margin-left: 40px;">Name: Michael Bietenholz</div>
<div style="margin-left: 40px;">Email address: <a href="mailto:mbieten@yorku.ca">mbieten@yorku.ca</a></div>
<div style="margin-left: 40px;">Creator: User</div>
<div style="margin-left: 40px;">Department: AIPS Data Reduction</div>
<div style="margin-left: 40px;">Staff (Owner): Amy Mioduszewski</div>
<div style="margin-left: 40px;">Type: Issue</div>
<div style="margin-left: 40px;">Status: Open</div>
<div style="margin-left: 40px;">Priority: Default</div>
<div style="margin-left: 40px;">SLA: NRAO E2E</div>
<div style="margin-left: 40px;">Template group: Default</div>
<div style="margin-left: 40px;">Created: 25 September 2017 11:14 AM</div>
<div style="margin-left: 40px;">Updated: 27 September 2017 11:30 AM</div>
<div style="margin-left: 40px;">Reply due: 27 September 2017 11:14 AM </div>
<div style="margin-left: 40px;">Resolution due: 22 June 2020 05:00 PM (999d 5h 30m)</div>
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Hi Michael,<br /><br />I've looked at the sniffer plots for EB and the data looks much worse than the VLBA antennas, much noisier phases and lower in amplitudes (there is some effect of longer baselines on this). So my guess is there was something wrong with EB during the observation, maybe pointing was off? Anyway I don't think there is anything to be done, you could increase the amplitudes with SNCOR (OPCODE='MULA'), but that won't help with the seemingly lower than expected sensitivity.<br />
<br />Amy Mioduszewski<br />VLA Scheduling Manager<br />NRAO
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