Use imua2 to List the 10 Brightest
USNO-A2.0 Stars in an
Image
Find the 10 brightest USNO-A2.0 Stars in image
test.fts and sort them by right
ascension, reading from one of the 11 USNO-A2.0 CDROMs.
$ > setenv UA2_ROOT /cdrom
$ > imua2 -hsn 10 test.fts
imua2 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
UA zone catalog /cdrom/ua003/zone1575.cat has no entries
0 USNO A-2.0 Catalog Stars at 1995.80 in FITS image test.fts
No USNO A-2.0 Stars Found
Mount USNO-A2.0 disc 2
imua2 2.9.4, 2 July 2001, Doug Mink (dmink@cfa.harvard.edu)
test.fts: RA: 09:54:09.518 - 09:56:24.378 J2000
Dec: +68:55:30.78 - +69:07:34.87 J2000
10 / 150 USNO A-2.0 Catalog Stars MagR < 12.3
USNO A2 number RA2000 Dec2000 MagB MagR Plate X Y
1575.03024160 09:54:31.795 +69:01:26.99 13.3 12.3 38 852.9 504.5
1575.03024587 09:54:45.502 +68:56:59.26 12.8 11.9 38 751.3 126.4
1575.03025037 09:55:01.142 +68:56:23.02 0.0 10.5 0 632.7 74.7
1575.03025075 09:55:02.341 +68:56:24.72 9.9 9.2 38 623.6 77.0
1575.03025078 09:55:02.523 +68:56:25.07 10.0 9.7 38 622.2 77.5
1575.03025086 09:55:02.783 +68:56:22.51 0.0 10.5 0 620.2 73.9
1575.03026108 09:55:34.657 +69:07:33.00 17.8 9.3 38 375.7 1018.5
1575.03026918 09:56:01.635 +68:59:19.65 19.7 11.9 38 172.8 322.5
1575.03026986 09:56:03.653 +68:59:07.20 18.6 11.1 38 157.5 305.0
1575.03027096 09:56:07.256 +69:01:58.16 19.1 11.9 38 130.1 546.0
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.ua2, use
imua2 -wn 10 test.fts
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