On Thu, 10 Aug 2006, David Berry wrote:
> Mark,
> The published form of FITS-WCS paper 2 does not allow any PVi_j
> keywords to be associated with the latitude (i.e. DEC) axis of a TAN
> projection. Since the DEC axis is axis 2 in the supplied header, this
> means that keywords called "PV2_m" (for any integer m) are not
> allowed. There are two possibilities of what the author may have been
> intending by including the PV2_3 keyword in the header:
...
thanks David, much appreciated. If I get to the bottom of it I'll let
you know which it was!
Mark
--
Mark Taylor Astronomical Programmer Physics, Bristol University, UK
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