imujc is a link to the
WCSToolsimcatutility which finds all of the
U.S. Naval Observatory UJ Catalog
objects in a FITS or IRAF image and lists their sky
and image positions. World coordinate system (WCS) information must be
present in the image header to describe, in a standard way, the relationship
between sky coordinates and image pixels.
This information is used by the program to find the region in the sky to
search and to transform right ascension and declination sky coordinate pairs
to image coordinate (X,Y) pairs. Output is sent to a file called
filename.ujc and to standard output if the -v flag is set.
The UJ number is the zone ((90 + declination in degrees) * 10)
followed by the sequence number of the star within the RA-sorted zone.
