[daip] [!15149]: AIPS - Day number in DELZN file (AIPS)

[R. Craig Walker]

R. Craig Walker updated #15149
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Day number in DELZN file (AIPS)
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           Ticket ID: 15149
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/15149
                Name: R. Craig Walker
       Email address: cwalker at nrao.edu
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): -- Unassigned --
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 06 December 2019 05:16 PM
             Updated: 06 December 2019 05:16 PM
           Reply due: 10 December 2019 05:16 PM (4d 0h 0m)
      Resolution due: 01 September 2022 12:00 AM (999d 6h 44m)

I have an observation mainly made at 43 GHz, but the DELZN segments were observed at 23 GHz.  The DELZN data comes to me as a separate file.  I process that file and create an output file from DELZN that is meant to be applied to the main file.  I've encountered, I think, an issue because the main file starts near the end of a day and the geodetic file starts early in the following day.  The DELZN output file has all times listed with day 0.  But the corresponding data in the main file are on day 1.  The DELZN file has no absolute day information (DOY, MJD...), so I don't see how it is going to get applied properly in this case.  What I have done is hand edit the day numbers in the DELZN file to change them from 0 to 1.  I think that will work.  But if I had not been looking into the DELZN files, I might have not gotten the desired results.  Am I missing something?  If not, I suggest that the DELZN file have a absolute day number added - perhaps MJD would be best.  There is plenty of room on the first line.  CLCOR would need to learn to use that number.

Cheers,
Craig



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