[evlatests] Bad default gain at Ku-band!
Bryan Butler
bbutler at nrao.edu
Tue Jun 19 14:47:37 EDT 2012
the coefficients in the EVLA.GAINS file are to blame. if you'll recall
we never quite closed the loop on how to normalize the gain curves. (or
at least *i* never closed the loop by sending a new file around.)
i'll send eric & bill a new file, but it won't happen today - too many
other pressing items.
this should not affect CASA at all because i never sent them the new
(bad) file.
-bryan
Rick Perley wrote, On 6/19/12 12:43 PM:
> Vivek pointed out a curiosity to me this morning regarding CL table
> #1 gain values at Ku-band. He had only X and Ku band data, so couldn't
> tell if other bands are affected. The 'spectral sweep' done yesterday
> covers all bands, so I could do a comprehensive look.
>
> The default CL table entries for Ku-band -- and Ku-band only -- are
> nonsense. Instead of being in the range of 1.0 to 1.02 (like the other
> bands), they are typically around 150. Something bad has happened.
>
> These values are the ones AIPS sees. I don't know about CASA...
>
>
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