[daip] [!13258]: AIPS - Issues with using FARS on VLBA data

Eric Greisen nraohelp at nrao.edu
Fri Jan 4 16:40:14 EST 2019


Eric Greisen updated #13258
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       Staff (Owner): Eric Greisen (was: -- Unassigned --)

Issues with using FARS on VLBA data
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           Ticket ID: 13258
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/13258
                Name: David Roberts
       Email address: roberts at brandeis.edu
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 04 January 2019 02:07 PM
             Updated: 04 January 2019 02:40 PM
           Reply due: 08 January 2019 02:07 PM (3d 23h 27m)
      Resolution due: 29 September 2021 05:00 PM (999d 2h 20m)

1. Your FARS output cube has 1 pixel on the RM axis.  You must set    APARM(1) to something, e.g. 512 and check closely the other APARMs.2. The task you want to combine images is FQUBE not MCUBE.  It can    make a non-regular spectral axis which FARS and other tasks understand.3. the LAST thing you want to do is mix bands in a UV data set.  FARS workswith images so image each band, smooth to a similar resolution, and thencombine with FQUBE.Eric Greisen


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