[daip] [!13162]: AIPS - DTSIM, still not ok

[Thomas Krichbaum]

Thomas Krichbaum updated #13162
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DTSIM, still not ok
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           Ticket ID: 13162
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/13162
                Name: Thomas Krichbaum
       Email address: tkrichbaum at mpifr-bonn.mpg.de
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): -- Unassigned --
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 13 December 2018 04:54 PM
             Updated: 13 December 2018 04:54 PM
           Reply due: 17 December 2018 04:54 PM (4d 0h 0m)
      Resolution due: 08 September 2021 12:00 AM (999d 7h 6m)

Dear EricI am sorry to bother you again, but DTSIM may still have a problem when DTERMS are activated.I simulated a polarized pointsource, and assign only to one station (PT) a set of DTERMS (all other have no D-term).When I plot the phase of Stokes 'Q' or 'U' vs. parallactic angle I see a strong slope of the one station which has a D-term,but not for the others (see plot attached). Also in Difmap I am unable to fit the Q and U phases using the known model fluxes from of Q and U. The total intensity phases are ok, but Q & U not. I am not 100% sure if the reason is an incorrect parallactic angle derotation of something else.I attach one plot and the DTSIM.inp.kind regards, Thomas

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