This SAOimage display shows the alignment of USNO-B1.0 Stars with a test image with a world coordinate system. immatch can be run to list matches between UCAC3 stars and sources found in the image. The command used was
saoucac3 test.fts -zoom 0.5 -histeqwhere saoucac3 is
saoimage -reg `imucac3 -r 10 $1` -wcscom sucac3_-ha_%s $*Clicking the w key on the star closest to the center returns the following:
sucac3 WCSTools 3.8.0, 13 November 2009, Doug Mink SAO Find closest star ucac3 16:15:56.228 +31:24:23.98 J2000 r= +00:15:00.0 at epoch 2000.0000 Number RA2000 Dec2000 MagB MagR MagI MagJ MagH MagK MagM MagA nim ncat Arcsec 243.117004 16:15:52.975 +31:25:15.50 15.76 14.78 14.27 13.72 13.29 13.23 15.14 15.07 2 2 66.25