[daip] AIPS AN files for VLBA

[Leonia Kogan]

Hi Lincoln,

I have used the task PRTAB (instead of PRTAN) to print an AN table 
and found the confirmation that something is wrong inside of PRTAN.

PRTAB gives nonzero values for both POLE-X and POLE-Y;
POLE-Y of PRTAB appears as POLE-X at PRTAN.

I think that PRTAB prints POLE-X and POLE-Y directely from the AN table and 
PRTAN prints them having carried out some conversion.

Any way it looks like you are right: there is a problem in PRTAN(fortunately 
not in the correlator). I'll look in PRTAN.

Thank you for the pointing out to the bug.

Leonia


----- Begin Included Message -----

>From lincoln at play.harvard.edu Wed Jun  6 09:16 MDT 2001
Date: Wed, 6 Jun 2001 11:14:50 -0400 (EDT)
From: Lincoln Greenhill <lincoln at play.harvard.edu>
To: jbenson at cv3.cv.nrao.edu
cc: lkogan at cv3.cv.nrao.edu
Subject: AIPS AN files for VLBA
MIME-Version: 1.0
X-Lines: 23
Status: RO


Hi John,

For the couple years the POLE-X and POLE-Y positions listed in the header
of the AN files, when printed by PRTAN in AIPS, have been wrong.  The Y
value is displayed where the X value should be, and zero is displayed for
Y.

I spoke with Leonia about this.  He suggested I make sure you are aware of
the problem because it could be in AIPS or in the correlator passing of 
parameters.

Regards,

Lincoln



Lincoln J. Greenhill      Harvard-Smithsonian Center for Astrophysics 
Radio & Geoastronomy Division, 60 Garden St, Cambridge, MA 02138, USA
Telephone:  1 617-495-7194             FAX:  1 617-495-7345
Internet:  greenhill at cfa.harvard.edu   http://cfa-www.harvard.edu/~lincoln



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