NAME

       wcsgrid - Extract FITS WCS keywords and plot graticule

SYNOPSIS

       wcsgrid [-a<alt>] [-d<pgdev>] [-h<hdu>] [<fitsfile>]

DESCRIPTION

       wcsgrid  extracts  the WCS keywords for an image from the specified FITS file and uses pgsbox() to plot a
       2-D coordinate graticule for each alternate representation found.

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

OPTIONS

       -a<alt>
              Plot a graticule only for the alternate representation specified (ignored if there is only one).

       -d<pgdev>
              PGPLOT device type (default XWINDOW, use "?" for list).

       -h<hdu>
              Move to HDU number (1-relative) which is expected to contain an image array.   (Useful  for  input
              from stdin.)

wcsgrid 8.4                                       October 2024                                        WCSGRID(1)