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The steps in CASA involve
- Separating spectral windows and different sources into
independent (temporary) MS
- Getting rid of flagged data
- Setting the velocity reference frame and correcting
for Doppler motions
- Exporting to UVFITS
- Removing the intermediate MS
The intermediate MS is created using mstransform, with
keepflags=False, regridms=True, outframe='LSRK'. Source and
spectral window identification is done using keywords spw and
field, and an appropriate rest frequency is specified (in MHz)
using restfreq. Finally, exportuvfits is used on the
simple intermediate MS. [rgb]1,0,0IMAGER provides to CASA a tool named
casagildas() that scans the content of the Measurement Set
(using listobs() to automatically do this on all combinations
of spectral windows and sources.
Gildas manager
2023-06-01