WCS question

[Arnold Rots]

The logical next value for RADECSYS is "ICRS".  That is what we will
be using for AXAF.

  - Arnold Rots

Greg Hennessy wrote:
> 
> I am working on producing a set of images on CDROM that will have
> astrometry according to the Greisen and Calabretta A&A 1996 paper, but
> the four allowed values for RADECSYS are two for FK4, one FK5, and one
> geocentric apparent place. The images I will be working on are
> reduced against the ACT catalog. Are there any conventions to what
> RADECSYS should be for this? I would assume 'HIP' but would like some
> advice. 

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Arnold H. Rots                                         AXAF Science Center
Smithsonian Astrophysical Observatory                tel:  +1 617 496 7701
60 Garden Street, MS 81                              fax:  +1 617 495 7356
Cambridge, MA 02138                             arots at head-cfa.harvard.edu
USA                                     http://hea-www.harvard.edu/~arots/
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