Ft

Help on ft task:

Insert a source model into the MODEL_DATA column of a visibility set:

       A source model (souce.model image) or components list is converted into a
       model visibility that is inserted into the MODEL_DATA column.  This is
       needed to use resolved source in gaincal and in fluxscale.

       Setjy will automatically make this ft step on the
       sources currently available are 3C48, 3C138, 3C147, 3C286
       at 1.4, 5.0, 8.4, 15, 22, 43 GHz.  Their location is site
       dependent.  In Charlottesville and at the AOC, the models are
       in /usr/lib(lib64)/casapy/data/nrao/VLA/CalModels.


       Keyword arguments:
       vis -- Name of input visibility file
              default: none; example: vis='ngc5921.ms'
       field -- Field name list
               default: '' ==> all
               NOTE: BUT, only one source can be specified in a multi-source vis.
               field = '1328+307'  specifies source '1328+307'
               field = '4' specified field with index 4
       spw -- Spw selection
               default: spw = '' (all spw)
       model -- Name of input model image
               default: '' ==> None;
               example: model='/usr/lib/casapy/data/nrao/VLA/CalModels/3C286_X.im'
               Note: The model visibilities are scaled from the model frequency
                     to the observed frequency of the data.

       complist -- Name of component list
               default: None; ; example: complist='test.cl'
               component lists are difficult to make.
       incremental -- Add model visibility to the existing MODEL_DATA visibilties
               default: False; example: incremental=True