Displaying an Image Annotated with Celestial Coordinates

To display a grey-scale image, use KAPPA:DISPLAY. Then use SKYGRID to add a celestial coordinate grid round the image. By default, SKYGRID displays equatorial coordinates (equinox 1950), but if necessary the SKYGRID parameter COORDS can be used to specify a different equinox, or to specify ecliptic or galactic coordinates (see section ).