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Bandpass calibration

The bandpass is calibrated using the task BPASS. The following inputs will solve for both the amplitude and the phase variations across the band. Setting SOLINT=-1 will use all the data for the source specified (a bright one) to construct a single bandpass solution for each antenna. BPASSPRM(10)=1 will normalise the data in such a way as to make the solution less sensitive to the amplitude calibration.

>TASK 'BPASS'
>CALSOUR 'OQ208'
>SOLINT -1
>DOCALIB 2
>BPVER 1
>BPASSPRM(1) 0
>BPASSPRM(2) 1
>BPASSPRM(10) 1
>GO

The bandpass solutions can be viewed using POSSM or BPLOT (Fig. 7) and their effect on the data determined using POSSM.



Stefanie Muehle 2008-01-28