[daip] [!4218]: aips - Calibration of VLA HI data with multiple IFs

[Eric Greisen]

Eric Greisen updated #4218
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       Staff (Owner): Eric Greisen (was: -- Unassigned --)
              Status: Closed (was: Response Overdue)
                 Due: - Cleared - (was: 15 January 2014 11:59 AM)

Calibration of VLA HI data with multiple IFs
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           Ticket ID: 4218
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/4218
           Full Name: John Michael Cannon
               Email: jcannon at macalester.edu
             Creator: User
          Department: AIPS Data Processing
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Closed
            Priority: Default
      Template Group: Default
             Created: 09 January 2014 11:46 AM
             Updated: 13 January 2014 05:18 PM



Sorry for being slow with an answer:

There is a 1.7 MHz change in the frequency used between
the 3rd and 4th segments of data and FILLM interprets that
as cause for a new FQID (not IF).  The adverb CPARM(7) in
FILLM controls its behavior.  To ignore this frequency difference
set CPARM(7) = -1000 or something negative and re-run FILLM.

Eric Greisen




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