If WCSLIB can do it, so can AST (but AST doesn't as yet do it - it's on
the list of possible AST developments, along with support for -TAB, etc).
David
On Tue, 14 Mar 2006, Malcolm J. Currie wrote:
> There is an imminent vote on the HEALPix WCS Convention by the European
> FITS Committee. Does anyone here have any objection to this convention
> being augmented to the official FITS standard?
>
> The proposition being voted upon is
>
> Should the proposed conventions for representing the HEALPix
> projection in FITS files, given in Section 6 of the paper
> "Mapping on the HEALPix grid" by Mark Calabretta and Boud Roukema,
> be approved as an extension of the FITS World Coordinate System
> (WCS) standard?
>
> Please forward to anyone in your respective UK-funded community that may
> be impacted by this proposal or likely has an opinion. I'd like to hear
> pros (e.g. "yes it's absolutely vital for...") and cons. Any comments
> should be sent no later Friday morning.
>
> David B: does AST support the convention?
>
> Thanks,
>
> Malcolm
>
> --------------------------------------------------------------------
> Call for Regional FITS Committee Vote on the HEALPix WCS Convention
>
> FITS WCS Paper II was written with the intention that new spherical
> projection types might be added in future. The HEALPix projection,
> described in detail in "Mapping on the HEALPix grid" by
> Mark Calabretta and Boud Roukema, is such a projection (see
> http://www.atnf.csiro.au/~mcalabre).
>
> Section 6 of the paper presents the HEALPix projection, 'HPX' in FITS,
> in the same terms as those in WCS Paper II. HPX was announced on
> FITSBITS and FITSWCS and implemented in WCSLIB in early 2005 with the
> formal 30-day comment period commencing in November.
>
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