gzipped images in SIAP 1.0

[Arnold Rots]

Requiring IVORN would exclude all existing FITS files in archives,
which would be unfortunate.

However, under HEA conventions there is a keyword HDUDOC that refers
to the document that enumerates the conventions used.

  - Arnold

Roy Williams wrote:
[ Charset ISO-8859-1 unsupported, converting... ]
> ...
> When a machine client reads a FITS file, it needs is a way to scan the 
> FITS header and understand what it is and how to read it. I think the 
> need "FITS types" that the VO can register.
> 
> Suppose each FITS file has a special keyword IVORN, whose value is a 
> registry call number (ivo://...) that defines a "local FITS type". When 
> we dereference the IVORN, we get the metadata:
> 
> ...
> Roy
> 
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Arnold H. Rots                                Chandra X-ray Science Center
Smithsonian Astrophysical Observatory                tel:  +1 617 496 7701
60 Garden Street, MS 67                              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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