[daip] AIPS calibration of VLA data

[Data Analysts]

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>From fich at astro.uwaterloo.ca Thu Aug 24 14:41 MDT 2000
Date: Thu, 24 Aug 2000 16:37:20 -0400 (EDT)
From: Michel Fich  <fich at astro.uwaterloo.ca>
To: analysts at cv3.cv.nrao.edu
Subject: AIPS calibration of VLA data
MIME-Version: 1.0
X-Lines: 39
Status: RO

HI,  I must be forgetting even more than I thought.... I am having a lot
of trouble calibrating what should be easy data.  ...

I have two programs - one really old (AF141 - 23Apr87,  D array,
snapshots in C and L band, about 35 objects in each. don't need
polarization info) and one relatively new (AF346 - Jul and Dec 98, B
array, snapshots in C and L - same objects.  to be combined with
the old data to improve resolution).

I am running 15APR98 version of AIPS (I tried to upgrade to 31DEC99
but had problems - and couldn't get a response from AIPS people...
well to be fair I got a response to my first email, but then my reply to
their reply was ignored...)

I have been following to most recent cookbook I can find (15OCT99)
but I don't seem to make any progress ....  I have been through the
simplified version of the calibration process described in the
appendix, but when I finish and do a UVPLT on particular calibrators
I get what appears to be complete garbage...

I know the data is reasonable since I calibrated (and published)
the 1987 data long ago - but my old tapes are unreadable so I
have the data fresh out of the archives again.

I know I haven't given you enough to go with yet, but I am kind of stuck
on even where to start at this point.

sorry,

mike fich

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr. Michel Fich, Associate Professor,
Physics Department, University of Waterloo      Telephone:(519)888-4567 x2725
Waterloo, Ontario, Canada N2L 3G1                     FAX:(519)746-8115
    email: fich at astro.uwaterloo.ca      http://astro.uwaterloo.ca/~fich
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