create Create the output, and copy the calibration tables to it. copy Copy the calibration tables to the output, overwriting and previously existing calibration tables. This is the default. apply Apply the input calibration tables to the output calibration tables. This is the sort of operation that you might do if you have two sets of calibration tables that you wish to "multiply" together (implemented for gains and bandpass only). merge Merge the two calibration tables together. This is the sort of operation that you will want to perform if you have two sets of calibration tables which are disjoint in time (e.g. you used two secondary calibrators). The merge opertation will weave the two sets of tables together. (implemented for gain tables only).
nopol Do not copy the items dealing with polarization calibration. nocal Do not copy the items dealing with antenna gain calibration. nopass Do not copy the items dealing with bandpass calibration (this includes the cgains and wgains tables).