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<p>Tsys problem at VLBA<br>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Betreff:
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<td>Re: C231A VLBA Observer's Log {External}</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Datum: </th>
<td>Sat, 6 May 2023 10:16:44 -0600</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Von: </th>
<td>VLB operators <a class="moz-txt-link-rfc2396E" href="mailto:vlbaops@nrao.edu"><vlbaops@nrao.edu></a></td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">An: </th>
<td>Thomas Krichbaum <a class="moz-txt-link-rfc2396E" href="mailto:tkrichbaum@mpifr-bonn.mpg.de"><tkrichbaum@mpifr-bonn.mpg.de></a></td>
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On 5/6/23 10:06, Thomas Krichbaum wrote:<br>
<blockquote type="cite">So my conclusion is that when a VLBI scan
is preceeded by a pointing scan, the Tsys for LCP are corrupted.
When there is no preceeding 7mm pointing scan, then the Tsys are
ok.<br>
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I understand that you may not be able to fix this immediately,
but it is certainly a feature to look into after the session is
over. Apparently the DBE2 is not properly setup for 3mm Tsys
measurement when a7mm pointing scans is preceeding.<br>
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Thank you for the information! If this is the case, it's
definitely not something the operators are able to fix, but
perhaps Jay or Walter will be able to investigate it for us.<br>
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Betty Ragan, VLBA operator<br>
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