[Difx-users] How to read difx2fits output

[Rebecca Lin]

Hi Leonid,

Thanks for pointing me to the documentation! I'm hoping to compare
visibilities from my correlation pipeline to the output from DiFX.

Best,
  Rebecca

On Sat, 28 Aug 2021 at 13:16, Leonid Petrov <Leonid.Petrov at lpetrov.net>
wrote:

> 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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