[daip] aips_gripe

[Leonia Kogan]

Hi Lincoln,

Can you send both apparent and epoch coordinates and IMH outputs 
before and after CLCOR.

Thank you

Leonia
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>From daip-admin at donar.cv.nrao.edu Thu Sep 20 16:31 MDT 2001
From: Lincoln Greenhill <lincoln at rglinux2.harvard.edu>
To: aipgripe at zia.aoc.NRAO.EDU, aipsmail at cv3.cv.nrao.edu, daip at cv3.cv.nrao.edu,
        egreisen at cv3.cv.nrao.edu, pmurphy at cv3.cv.nrao.edu
Subject: [daip] aips_gripe
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{20-SEP-2001 17:33:52}
{rglinux2     rglinux2}
{   24  31DEC01  LINX}
{lincoln greenhill}
{cfa}
{617 495 7194}
{I believe that CLCOR corrections to the SU table for opcode ANTP are
 not correctly implemented.
  
 Example:  Original coordinates:  05 35 14.5098  -5 22 30.482
           CLCORPRM    0  0  0  0  +0.0231  +0.017
           New SU table entry:    05 35 14.4953  -5 22 30.426
  
 I admit that there is something here I do not understand...I have
 used TABGET to read the real*8 entries in the SU table (cols. 11 & 12)
 and I do not obtain the coordinates listed by LISTR in hhmmss or dddmmss
 format.
  
 However, I am sure that the CLCORPRM entries do not add up to the values
 placed in the SU table.  I note that the CLCORPRM entries I have specified
 are angular offsets on the sky, in arcsec.  The expected new coordinates
 should be   05 35 24.14.5110  -5 22 30.4650  where I have accounted for
 precession and nutation in the J2000 frame.  At minimum, the sign of the
 change in RA is wrong.
  
  }
{CLCOR corrections to SU tbl for ANTP seem to be incorrect.}
{greenhill at cfa.harvard.edu}
{ }
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