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

[David Roberts]

Issues with using FARS on VLBA data
-----------------------------------

           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 09:07 PM
             Updated: 05 January 2019 02:21 PM
           Reply due: 09 January 2019 12:00 AM (3d 9h 39m)
      Resolution due: 30 September 2021 12:00 AM (998d 9h 38m)

Hi Eric-

Thanks. I have it all working now. (The explain file for FARS says to use MCUBE to make Q and U cubes.)


Dave


> On Jan 4, 2019, at 4:40 PM, Eric Greisen  wrote:
> 
> 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 works
> with images so image each band, smooth to a similar resolution, and then
> combine with FQUBE.
> 
> Eric Greisen 
> 
> 
> Ticket Details
> Ticket ID: 13258
> Department: AIPS Data Reduction
> Type: Issue
> Status: Open
> Priority: Default
> 
> Helpdesk: https://help.nrao.edu/index.php?



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