Find Stars in FITS and IRAF Image Region imstar is a utility for finding all of the stars in a FITS or IRAF image and listing their sky positions if a world coordinate system is present.
Output is sent to a file called filename .stars and to standard output if the -v flag is set.
The output includes the right ascension and declination if the a world coordinate system is defined in the image header or on the command line, the instrumental magnitude of the star, with the brightest star in the image set to 0.0, the image and and y coordinates of the center of the star, the integrated brightness of the star in counts, and the peak brightness of the star in counts. If the -q option is used to set a region character, output is to filename .reg . This file can be used as a reference catalog by imwcs , immatch , imcat , or scat . Command Line Arguments Search Parameters Examples 1. Make a reference catalog from an image with a WCS 2.