sty2 Examples

Example 1. Search with results to standard output

Find the 10 brightest Tycho-2 stars in a 1-degree box centered at 10:00:00 +10:00:00 and sort them by right ascension.: sty2 -shn 10 -r -1800 10:00:00 +10:00:00 J2000
produces the following: sty2 WCSTools 3.6.9, 5 July 2007, Doug Mink SAO TYCHO-2 10:00:00.000 +10:00:00.00 J2000 +- +00:30:27.8 +00:30:00.0 at epoch 2000.0000 10 / 33 Tycho 2 Catalog Stars (MagB brighter than 11.60) Tycho2_num RA2000 Dec2000 MagB MagV Arcsec 0829.00231 09:58:00.597 +09:41:40.61 9.38 9.01 2079.10 0832.08721 09:58:07.997 +10:01:52.74 11.05 10.51 1658.28 0832.10651 09:58:28.099 +10:02:51.17 10.46 9.87 1368.22 0832.09811 09:58:28.739 +10:25:28.51 9.98 9.32 2037.49 0832.06321 09:58:45.688 +10:27:31.08 9.09 7.30 1982.27 0832.09051 09:59:17.051 +10:10:03.02 10.40 9.75 875.19 0829.07851 10:00:59.907 +09:40:43.74 11.22 10.51 1456.32 0832.10121 10:01:24.390 +10:04:24.78 11.60 11.02 1274.30 0829.01931 10:01:42.735 +09:36:40.38 11.17 10.05 2065.14 0832.12001 10:01:46.849 +10:12:57.38 9.84 9.24 1758.97

Example 2. Search with results to a file

Find all Tycho-2 stars within 1 degree of M51 and write results to a file: sty2 -twr 3600 -o m51 13:27:48.311 +47:27:28.98 B1950
produces the following in the file m51.tycho2: catalog TYCHO-2 ra 13:27:48.311 dec +47:27:28.98 radecsys fk4 equinox 1950.0000 epoch 1950.0000 rpmunit mas/year dpmunit mas/year radsec 3600.00 catsort mag program sty2 WCSTools 3.6.9, 5 July 2007, Doug Mink SAO tycho2_id ra1950 dec1950 magb magv pmra pmdec arcsec ---------- ------------ ------------ ----- ----- ------ ------ ------ 3463.02841 13:29:50.208 +47:29:28.31 7.33 7.09 28.6 -7.8 1241.62 3460.01001 13:26:55.864 +48:06:18.49 7.53 7.10 -47.6 1.2 2388.74 3460.05191 13:27:11.411 +46:37:43.33 8.65 8.20 -1.5 7.5 3009.38 3466.09541 13:31:08.218 +48:00:55.45 8.82 7.59 16.7 -44.2 2844.77 3460.02151 13:25:07.487 +48:15:39.60 9.87 8.50 -4.3 -38.0 3312.90 . . . 3466.11031 13:28:11.374 +48:06:12.94 13.15 12.05 -19.2 10.1 2335.55 3460.05931 13:24:29.756 +47:04:34.67 13.20 12.13 -215.0 91.5 2444.01 3463.05801 13:30:19.243 +47:15:16.71 13.30 12.84 -8.8 -9.6 1699.54 3460.02391 13:25:23.328 +47:54:29.20 13.61 12.24 -7.4 -12.1 2183.72 3463.05641 13:30:42.205 +46:54:17.63 13.68 12.46 13.5 -13.7 2666.17

Example 3. Find closest star

Find the closest Tycho-2 star to 10:00:00 +30:00:00 J2000: sty2 -ha 10:00:00 +30:00:00 J2000
produces the following: sty2 WCSTools 3.6.9, 5 July 2007, Doug Mink SAO Find closest star TYCHO-2 10:00:00.000 +30:00:00.00 J2000 r= +00:30:00.0 at epoch 2000.0000 Tycho2_num RA2000 Dec2000 MagB MagV Arcsec 1967.03071 10:00:09.788 +29:54:57.49 13.73 12.71 328.16

Example 4. List selected stars from catalog

List the first 10 stars in the Tycho-2 Reference Catalog disregarding their actual ID numbers.: sty2 -h 1-10x1
produces the following: sty2 WCSTools 3.6.9, 6 July 2007, Doug Mink SAO Tycho2_num RA2000 Dec2000 MagB MagV 0001.00081 00:09:16.201 +02:13:54.64 12.15 12.15 0001.00131 00:04:30.140 +02:16:02.62 10.49 8.67 0001.00161 00:04:13.648 +01:53:52.18 12.92 12.10 0001.00171 00:00:12.144 +01:46:17.20 11.32 10.52 0001.00172 00:00:12.144 +01:46:17.20 10.77 10.09 0001.00201 00:01:29.328 +02:28:48.68 12.19 11.40 0001.00221 00:04:06.640 +01:27:30.57 12.68 12.29 0001.00241 00:03:05.836 +01:42:38.14 12.54 11.70 0001.00361 00:01:11.613 +01:55:25.02 11.67 11.65 0001.00391 00:09:29.140 +02:18:14.41 9.51 9.39

Example 5. Match stars in input catalog

Match the stars in the input catalog test.tab to the ACT Reference Catalog and list them one match per line.

sty2 -l @test.tab

produces the following:

240020 22:15:54.555 -11:36:56.13  9.80  __  5806.06961 22:15:54.555 -11:36:56.23 10.99 10.24 29    -0.00    -0.10     0.10
267313 17:47:51.210 -22:58:17.35  9.10  A0  6828.03531 17:47:51.195 -22:58:17.30  9.28  8.91 50    -0.21     0.05     0.22
196784 13:42:07.204 -09:06:40.06  8.60  K0  5546.14081 13:42:07.201 -09:06:40.06  9.64  8.65 22    -0.05     0.00     0.05
127373 10:24:43.528 +11:21:21.15 10.20  K0  0841.12051 10:24:43.507 +11:21:21.50 10.80  9.49 21    -0.31     0.35     0.47
095438 06:07:46.792 +23:28:44.76 10.30  K0  1864.07621 06:07:46.837 +23:28:44.95 10.45  9.36 131     0.62     0.19     0.65

where the columns are input catalog star name, RA, Dec, magnitude, spectral type, Guide Star region.number, RA, Dec, Bt magnitude, Vt magnitude, number of stars in the 1800-arcsec-radius default search radius, and catalog - search dra, ddec, and dr (in arcseconds).