This SAOimage display shows only the test image, but you can still identify stars in the image, since it has a world coordinate system. immatch can be run to list matches between USNO-J1.0 stars and sources found in the image. The command used to display the image, before the [ and ] keys turned off the catalog plotting, was
saoujc test.ftswhere saoujc is
saoimage -reg `imujc -r 10 $1` -wcscom sujc_-ha_%s $*Clicking the w key on the star closest to the center returns the following:
sujc 2.5, 14 December 1998, Doug Mink SAO Find closest star UJ number RAJ2000 DecJ2000 Mag Plate Arcsec 1575.0345436 09:55:45.020 +69:01:45.85 12.20 61 1.17