[Difx-users] How to read difx2fits output
Leonid Petrov
Leonid.Petrov at lpetrov.net
Sat Aug 28 13:16:26 EDT 2021
Rebeca,
> I'm wondering if there is documentation on how information is stored in the
> fits file
Sure:
ftp://ftp.aoc.nrao.edu/pub/software/aips/TEXT/PUBL/AIPSMEM114.PDF
> and how to plot the visibilities.
Usually, these plots are useless. There are exceptions, but generally,
you need process the data first to see any signal. You can develop your
own software for visibility analysis or try to use existing packages,
whichever you prefer. But it is not easy. Depending on the problem,
mastering data analysis may take from months (though this sounds
very optimistic) till ... all your life. Good luck.
> I'm mainly wondering where the
> complex visibilities are stored in the fits file.
In section UV_DATA. See AIPSMEM114.PDF for details.
Leonid
2021.08.28_13:09:41
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