FITS FROM
Keywords: sic

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FITS FROM

            [VECTOR\]FITS  OutputFile.fits  FROM  InputFile.gdf  [/STYLE  Style]
        [/BITS Nbit]

        Create  a FITS file from a Gildas image or table. The layout of the FITS
        file depends on the specified "Style", although default styles  will  be
        used  depending  on the Gildas image (e.g. UVFITS is used for UV Tables,
        STANDARD is used for images).

        The number of bits is controlled by "Nbit". It defaults to -32  for  im-
        ages, and +16 for UV data. See subtopic for details.

        Note  that,  in order to conform Calabretta & Greisen 2002 formalism and
        recommendations (which define the FITS description of the  spatial  pro-
        jections  of the celestial sphere), radio-projected maps are exported to
        FITS under the Sanson-Flamsteed (SFL) description, by properly  redefin-
        ing  the reference point on the Equator with no need for reprojection of
        the data itself.

        Options /BLC and /TRC are not available in this direction.