imstar
Example 2

Find the 10 brightest stars in image test.fts so that a WCS can be fit to them by imwcs or so they can be be matched against a catalog by immatch.: imstar -n 10 -i 5000 -w test.fts
produces the following in the file test.fts.dao: #IMAGE test.fts #EQUINOX 2000.0 #Stars extracted by IMSTAR 2.3, 15 June 1998, Doug Mink, SAO 617.49 59.96 0.00 29596 09:55:03.150 +68:56:12.65 617.42 87.23 0.01 30191 09:55:03.144 +68:56:31.98 749.42 123.43 0.24 30985 09:54:45.748 +68:56:57.18 979.66 209.95 0.44 29970 09:54:15.354 +68:57:57.44 629.52 87.02 0.56 30005 09:55:01.552 +68:56:31.80 630.51 64.87 0.68 30132 09:55:01.435 +68:56:16.08 467.68 68.95 1.28 30725 09:55:22.855 +68:56:19.43 620.53 74.02 1.29 30382 09:55:02.742 +68:56:22.60 294.08 163.51 2.12 7713 09:55:45.674 +68:57:26.78 255.31 88.94 2.31 5216 09:55:50.792 +68:56:33.94: #IMAGE test.fts; #EQUINOX 2000.0; #Stars extracted by IMSTAR 2.3, 15 June 1998, Doug Mink, SAO; 617.49 59.96 0.00 29596 09:55:03.150 +68:56:12.65; 617.42 87.23 0.01 30191 09:55:03.144 +68:56:31.98; 749.42 123.43 0.24 30985 09:54:45.748 +68:56:57.18; 979.66 209.95 0.44 29970 09:54:15.354 +68:57:57.44; 629.52 87.02 0.56 30005 09:55:01.552 +68:56:31.80; 630.51 64.87 0.68 30132 09:55:01.435 +68:56:16.08; 467.68 68.95 1.28 30725 09:55:22.855 +68:56:19.43; 620.53 74.02 1.29 30382 09:55:02.742 +68:56:22.60; 294.08 163.51 2.12 7713 09:55:45.674 +68:57:26.78; 255.31 88.94 2.31 5216 09:55:50.792 +68:56:33.94