[daip] [!6781]: AIPS - Issue in VLBARUN script for BF114a data (VLBA + LMT)

[Christiaan Brinkerink]

Christiaan Brinkerink updated #6781
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Issue in VLBARUN script for BF114a data (VLBA + LMT)
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           Ticket ID: 6781
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/6781



Hello,

I am attempting to process the data of our BF114a experiment (executed on May 22nd 2015) in AIPS. I have imported the gaincurve for LMT as well as the Tsys values we got from the LMT crew using ANTAB, before running the VLBARUN script. I get ACCOR and APCAL plots that look fine (I am having the script generate as many plots as possible), but the VLBARUN script dies at the POSSM stage just past CLCAL (which in turn is run directly after FRING, according to the AIPS message server). The error message I get is:

FNDPOL: REQUESTED STOKES HALF INCOMPATIBLE WITH ACTUAL

The dataset only has LL polarization, and a quick IMH check indeed shows that we only have 1 Stokes component in the data. Somehow a part of the script expects RR pol data too, it seems. Is this a familiar error? I am not sure how to fix it. In case it is of any help, I am attaching the ASCII tsys file for LMT I made and which I imported using ANTAB.

On a related note: checking the gaincurves (GC) for the VLBA stations in AIPS using PRTAB, it seems that each VLBA station only has gaincurves defined for 3 out of 16 IFs (with quadratic polynomials having 3 coefficients). Those 3 gaincurves are the same for a given station though. Is this something I need to fill out more completely with extra ANTAB calls and appropriate gaincurve files?

Thanks for your help!

Christiaan

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