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View this ticket online: <a href="https://help.nrao.edu/agent/#app.tickets,t:35025" title="(#)" style="color: #0065A3; font-family: Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; margin: 0; text-align: left; line-height: 1.3; text-decoration: underline;">https://help.nrao.edu/agent/#app.tickets,t:35025</a>
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Xinkai Chen <xkchen.astro@gmail.com> </td>
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• Xinkai Chen <xkchen.astro@gmail.com><br>
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Awaiting User
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Redhat 8
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Hi Xinkai, Thank you. This seems to be early (new old) correlator data, when the line observations could only use 18 antennas in one (R) polarization. It looks like the first AB243 set...
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<!-- DP_MESSAGE_BEGIN --><div dir="ltr" lang="en" name="dp_message_161014_begin" class="dp_message_161014_begin"><div>Hi Xinkai,</div><div>Thank you. This seems to be early (new old) correlator data, when the line observations could only use 18 antennas in one (R) polarization. It looks like the first AB243 set was taken after some testing which may or may not have to do with your 'empty' antenna file. I don't know the cause f this, but I have as suggestion to replace that antenna file with another. I am attaching two 'TASAV' files. You load them in to AIPS using FITLD and then use TACOP to copy the AN-file to your 'CH 0' data (after removing the faulty AN version 1 from your uv-data with 'extdest').</div><div>One file has the antenna file of the second AB243 observation, taken two days later; it is very likely that the configuration setup was the same, with the same 18/9 antennas in/out the array, so I would try that first. If that fails or it looks like some antennas have no data, then I would suggest to try the other AN file (after removing version 1 again), which should include all antennas from an observation just after that AB243 you are trying to calibrate. Whichever works you would want to copy also to the 'LINE' so that you can flag/calibrate/etc on CH0 to make it go faster with better SNR (and copy the CL to LINE).</div><div>I think this will work; let us know if you need more assistance.<br></div><div><br></div>
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<div>Lorant Sjouwerman (he, etc)<br></div>
<div>NRAO Science User Support<br></div></div><!-- DP_MESSAGE_END -->
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<br><strong>Attachments</strong>
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• <a href="https://help.nrao.edu/file.php/2651AQXKPZCKHP26506546A34DCT/840102_AB243.FITS" style="color: #0065A3; font-family: Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; margin: 0; text-align: left; line-height: 1.3; text-decoration: underline;">840102_AB243.FITS</a> (503.44 KB)
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• <a href="https://help.nrao.edu/file.php/2651QSCCJSPNWX26506551767F3T/19831231AT44.FITS" style="color: #0065A3; font-family: Helvetica, Arial, sans-serif; font-weight: normal; padding: 0; margin: 0; text-align: left; line-height: 1.3; text-decoration: underline;">19831231AT44.FITS</a> (686.25 KB)
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