[daip] [!11945]: AIPS - BPASS complains about the IFs

Mar Mezcua nraohelp at nrao.edu
Thu May 17 09:15:38 EDT 2018


Mar Mezcua updated #11945
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              Status: Open (was: Closed)

BPASS complains about the IFs
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           Ticket ID: 11945
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/11945
                Name: Mar Mezcua
       Email address: mmezcua at iac.es
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
      Template group: Default
             Created: 19 April 2018 12:51 PM
             Updated: 17 May 2018 01:15 PM

Hi again Eric,after successfully dealing with the IFs issue, I have formed the calibration and imaging of each of the two frequencies individually. Everything looks very nice, and I get a very nice detection. However, I'm puzzled by one issue: when imaging the target I get rms noises of 0.1 microJy/beam (while the predicted one for 3h on source is of ~10 microJy/beam)! How is this possible? I also find that at C-band the flux calibrator (3C279) has a flux density of 5.9599E-02 Jy, and the phase calibrator (J1330+071) of 5.4240E-04 Jy, values way lower than the tabulated fluxes.I have revisited all the steps and tables and outputs and everything seems to be correct, so I do not understand what's wrong. Any ideas??Thanks!Mar

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