[daip] [!12656]: AIPS - Offset source moving in RA during observation

[Andy Biggs]

Andy Biggs updated #12656
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Offset source moving in RA during observation
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           Ticket ID: 12656
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/12656
                Name: Andy Biggs
       Email address: abiggs at eso.org
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): -- Unassigned --
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 07 September 2018 04:11 PM
             Updated: 09 September 2018 09:18 AM
      Resolution due: 03 June 2021 12:00 AM (997d 14h 41m)

I've run UVFIX on the MULTI file that I'm using to map and self-calibrate the lens and then mapped the corrected data using DO3DIMAG=1. It makes no difference to the maps. I've attached these so that you can see the form of the error. The residuals have a very distinctive 'tuning fork' pattern which can be seen in the restored map as a sort of 'v' shape. I have performed no averaging of the data - I map using the native 16 0.5-MHz channels and 0.5s averaging time.If you'd like to look at the data, I've put them on my ftp site:ftp://ftp.eso.org/pub/general/abiggs/1030_X_UVFIX.FITSftp://ftp.eso.org/pub/general/abiggs/GX006_X.BOXftp://ftp.eso.org/pub/general/abiggs/IMAGR.INPThis should be all you need to recreate my maps.Andy

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