.help wcsinfo Mar12 votools
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NAME
wcsinfo -- Determine the WCS information of an image
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USAGE
wcsinfo image
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PARAMETERS
.ls image
The input image name.
.le
.ls verbose = no
Print verbose output?
.le

.ls OUTPUT PARAMETERS
After reading the image, the following task parameters are updated with 
the values derived from the input image:

.nf
         (pos = "")             POS string
        (size = 0.)             SIZE value
          (ra = 0.)             RA value
         (dec = 0.)             DEC value
         (llx = 0.)             LLX wcs corner
         (lly = 0.)             LLY wcs corner
         (urx = 0.)             URX wcs corner
         (ury = 0.)             URY wcs corner
        (midx = 0.)             X wcs midpoint
        (midy = 0.)             Y wcs midpoint
       (scale = 0.)             Scale ("/pix)
         (rot = 0.)             Rotation (deg)
       (width = 0.)             Plt width (arcmin)
      (height = 0.)             Plt height (arcmin)
       (axmap = "")             Axis mapping
       (epoch = 0.)             Epoch
     (equinox = 0.)             Equinox
      (ctype1 = "")             CTYPE1
      (ctype2 = "")             CTYPE2
      (crval1 = 0.)             CRVAL1
      (crval2 = 0.)             CRVAL2
      (crpix1 = 0.)             CRPIX1
      (crpix2 = 0.)             CRPIX2
        (cd11 = 0.)             CD1_1
        (cd12 = 0.)             CD1_2
        (cd21 = 0.)             CD2_1
        (cd22 = 0.)             CD2_2
       (ispix = no)             Pixel only coords?
.fi

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DESCRIPTION

The \fIWCSINFO\fR task is used to determine the WCS information in an image
in ways which make it easy for script developers to use specific values
easily (e.g. the plate center, scale, size, corners, etc).  Images of 
arbitrary axis mapping and rotation can be used.  If no WCS information
can be found in the image, the \fIispix\fR parameter will be set to
'yes'.


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EXAMPLES
1. Summarize the WCS information about the dev$ypix test image:

.nf
  votools> wcsinfo dev$ypix
.fi

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REVISIONS
.
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SEE ALSO
getcat, getimg
.endhelp
