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Try LISTR OPTYPE='GAIN' INEXT-'CL' DOCRT=-3 set OUTPRINT to some file name dparm(1)=11</div>
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Eric Greisen</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Ioannis Myserlis <imyserlis@iram.es><br>
<b>Sent:</b> Friday, November 21, 2025 8:51 AM<br>
<b>To:</b> Eric Greisen <egreisen@nrao.edu><br>
<b>Subject:</b> Antenna elevation information for CP calibration in AIPS {External}</font>
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<div style="line-break:after-white-space">Dear Eric,
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<div>I’m not sure if this is the right channel to address this question. If not, please let me know to who I should write instead.</div>
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<div>I am analyzing 43 GHz (7mm) VLBA data with AIPS to calibrate and image the circular polarization (CP) signal of my targets (AGN jets). During our analysis we see some evidence of the beam squint effect that is introducing instrumental CP to the observations.
To address this effect and hopefully mitigate it we would like to perform and elevation-dependent analysis (which is the main parameter affecting beam squint) and for that we need to recover the elevation of each antenna at any given scan i<span style="color:rgb(0,0,0)">n
the experiment.</span></div>
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<div><font color="#000000">Is there a possibility to extract this information through AIPS in a metadata or table format? I hope my question is not too naive and apologize in that case.</font></div>
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<div><font color="#000000">Best regards and many thanks for your continued efforts on A|PS!</font></div>
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<div><font color="#000000">Ioannis Myserlis</font></div>
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--<br>
Staff Astronomer<br>
Instituto de Radioastronomía Milimétrica<br>
Avenida Divina Pastora 7, Granada, 18012, ES<br>
e-mail: <a href="mailto:imyserlis@iram.es">imyserlis@iram.es</a> | phone: +34 958 805 454, ext. 225, 278</div>
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https://www.iram.fr/~imyserlis</div>
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