Use imusa1 to
list the 10 Brightest
USNO-SA1.0 Stars in an
Image
Find the 10 brightest USNO-SA1.0 Stars in image
test.fts and sort them by right
ascension.
$ > imusa1 -h -sn 10 test.fts
imusa1 2.5, 8 December 1998, Doug Mink, SAO
test.fts: RA: 09:54:09.518 - 09:56:24.378 J2000
test.fts: Dec: +68:55:30.78 - +69:07:34.87 J2000
10 USNO SA-1.0 Catalog Stars at 1995.80 in FITS image test.fts
USNO SA1 number RA2000 Dec2000 MagB MagR X Y Plate Arcsec
1575.00497895 09:54:14.195 +69:01:03.47 16.9 15.7 986.4 472.3 38 338.27
1575.00497904 09:54:15.212 +68:57:57.88 15.4 14.5 980.7 210.6 38 395.44
1575.00498034 09:54:26.469 +69:00:25.66 18.0 15.5 893.8 418.3 38 279.34
1575.00498200 09:54:39.527 +69:05:26.05 17.2 15.7 792.3 841.2 38 307.64
1575.00498274 09:54:45.601 +68:56:59.04 12.2 11.4 750.5 126.1 38 321.53
1575.00498462 09:55:01.673 +69:00:08.39 18.3 14.3 627.2 392.4 38 117.74
1575.00498868 09:55:34.811 +69:07:33.10 18.5 8.6 374.6 1018.6 38 372.77
1575.00499012 09:55:45.359 +68:57:25.25 18.0 14.0 296.5 161.4 38 290.92
1575.00499027 09:55:47.277 +68:59:25.52 17.1 9.0 281.7 330.9 38 206.80
1575.00499228 09:56:03.827 +68:59:07.36 19.5 10.4 156.2 305.2 38 290.92
where the columns are region.number, J2000 RA, J2000 Dec, B and R magnitudes
image X and Y pixel coordinates computed using the
image world coordinate system,
the plate, unless from a catalog, and the distance in arcseconds from the center
of the image. To write a file
test.fts.usa1, use
imusa1 -w -n 10 test.fts
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