1 FITS_GILDAS
        FITS_GILDAS

    Converts a disk FITS image in a GILDAS image.  A disk FITS image  is  an
    2880   bytes   per   block   file  conforming  to  FITS standard for the
    information written in  the  blocks.   Such  disk  FITS  images  can  be
    produced  by  other  packages (e.g.  AIPS).  This task is intended for a
    single image.  For many  images,  or  tape  FITS,  use  the  interactive
    program GFITS.

    Images are assumed to have at most  4  axis.  FITS_GILDAS  also  handles
    UVFIT data.

    Conversion for FITS to GILDAS data format is not necessary: "on-the-fly"
    conversion  of  FITS files into GILDAS images is automatically attempted
    by all GILDAS programs and tasks. This conversion  creates  a  temporary
    GILDAS  image  (of  extension  .fits.gdf) which is normally deleted upon
    completion. However, this "on-the-fly" conversion will fail if the  FITS
    keywords are highly non-standard.

2 FITS$
        TASK\FILE "Input FITS file" FITS$

    Input disk FITS file name.
2 OUT$
        TASK\FILE "Output Gildas Image" OUT$

    Output GILDAS image name
2 STYLE$
        TASK\CHARACTER "Style of FITS image" STYLE$

    The "Style" of FITS files.  Many  supposedly  standard  FITS  files have
    small   (although   non-fatal)  deviations  from  the  (uncomplete) FITS
    standard.  The STYLE$ keyword is used to  correct  for  some  of  these.
    Available styles are
      - STANDARD
      - CPC  (IRAS   Chopped   Photometric   Channel)   :    uses   a   non-
        standard definition of axes, and a bizarre quasi-projection system.
      - SPLINE (IRAS spline maps) :   those  maps  have  an  incorrect  flux
        density  scale.   Correction  factor  applied  when  this keyword is
        specified.

2 BLC$
        TASK\INTEGER "Bottom left corner (all 0 ==> full image)" BLC$[4]

    Define the bottom  left  corner  of  the   input   FITS   file   to   be
    considered.  BLC is an array of dimension 4, since images are assumed to
    have at most 4-D.  0 means 1.
2 TRC$
        TASK\INTEGER "Top right corner (all 0 ==> full image)" TRC$[4]

    Define  the  top  right  corner  of  the   input   FITS   file   to   be
    considered.  0 means use the actual dimension.
1 END