NAME

       wcsware - Extract FITS WCS keywords for an image

SYNOPSIS

       wcsware [OPTION]... [FITSFILE]

DESCRIPTION

       wcsware  extracts  the  WCS keywords for an image from the specified FITS file, constructs
       wcsprm structs for  each  coordinate  representation  found  and  performs  a  variety  of
       operations  using  them.   It  features  a  "lint"  capability  as  one of its more useful
       operations.

       By default, all  known  extensions  to  the  FITS  WCS  standard  are  allowed,  including
       deprecated  usage.   However,  in  "lint"  mode,  strict  conformance  to  the standard is
       enforced.

       The FITS file may be specified according to the syntax understood by cfitsio, for  example
       "file.fits.gz+1" refers to the first extension of a gzip'd FITS file.  Use "-" or omit the
       file name for input from stdin.

OPTIONS

       -a<alt>
              Specify an alternate coordinate representation (ignored if there is only one).  Can
              also  be specified as a 0-relative index in the range 0 to 26, where alternates are
              sequenced alphabetically following the primary representation.

       -b     Use wcsbth() for primary image headers, normally wcspih() is used.  (Implies -i.)

       -f     Apply wcsfix() to the header.

       -h<hdu>
              Move to HDU number (1-relative) which  is  expected  to  contain  an  image  array.
              Overrides cfitsio extended filename syntax.  Also useful for input from stdin.

       -i     Allow image header WCS keywords in binary table headers.

       -l     Validate  (lint) the WCS keyrecords in the specified FITS header for conformance to
              the WCS standard.  (Implies -s.)

       -o     Use wcshdo() to translate the wcsprm struct into a FITS header and print it.

       -p     Print the struct(s) using wcsprt() (default operation).

       -P     Same as -p but don't print a default struct.

       -r     Require strict adherence to the FITS WCS standard, though allowing  the  deprecated
              AIPS-convention keywords, CROTAn, EPOCH, and VELREF, and also some other deprecated
              usage.  (Must follow -l if relaxed linting is required.)

       -s     Require strict adherence to the  FITS  WCS  standard,  disallowing  all  deprecated
              features.

       -t     Terse (with -l), report rejected WCS keyrecords only.

       -v     Verbose (with -l), report recognised WCS keyrecords as well.

       -w     Convert  world  coordinates,  obtained  from  stdin,  to  pixel  coordinates  using
              wcss2p().

       -x     Convert  pixel  coordinates,  obtained  from  stdin,  to  world  coordinates  using
              wcsp2s().