ssdss Examples

Find the 10 brightest SDSS point sources in a 1/3-degree square centered on 12:00:00 +2:00:00 J2000 and sort them by right ascension.: ssdss -s r -hn 10 -r -600 12:00:00 +2:00:00 J2000
produces the following: ssdss WCSTools 3.8.8, 22 February 2013, Jessica Mink SAO SDSS 12:00:00.000 +02:00:00.00 J2000 +- +00:10:00.4 +00:10:00.0 at epoch 2000.0000 10 / 2552 SDSS Sources (Magu brighter than 15.38) SDSS_number RA2000 Dec2000 Magu Magg Magr Magi Magz Type Arcsec 587726014532026403 11:59:29.890 +01:53:27.73 14.15 13.17 12.90 13.47 12.49 6 598.02 587726014532026410 11:59:30.083 +01:56:33.10 14.00 13.78 13.51 10.85 11.28 6 493.91 587726014532026445 11:59:33.046 +01:57:11.46 15.14 13.80 13.36 13.61 13.05 6 437.80 587726032248504373 11:59:39.109 +02:06:00.00 15.38 14.07 13.65 13.86 13.47 6 477.15 587726014532026483 11:59:56.027 +01:58:19.76 12.92 13.88 10.64 10.53 10.94 3 116.60 587726032248569870 12:00:06.501 +02:08:12.00 15.14 14.06 14.64 13.51 13.41 6 501.56 587726032248569878 12:00:07.820 +02:06:39.15 14.45 14.34 14.11 11.54 12.94 3 416.01 587726014532091920 12:00:13.465 +01:57:34.89 14.73 13.45 14.63 12.41 13.15 6 248.60 587726014532091953 12:00:24.853 +01:52:17.67 15.38 14.15 14.00 13.22 12.71 3 593.77 587726014532091983 12:00:34.058 +01:59:26.46 14.08 12.43 11.90 11.83 12.63 6 511.66 Note that Type=3 indicates galaxies and Type=6 indicates stars

Find all SDSS sources in a 1/3-degree circle and write results to a file: ssdss -twr 600 -o test 13:27:48.311 +1:27:28.98 B1950
produces the following in the file test.sdss: catalog SDSS ra 13:27:48.311 dec +01:27:28.98 radecsys fk4 equinox 1950.0000 epoch 1950.0000 radsec 600.00 catsort mag program ssdss WCSTools 3.9.0, 16 September 2013, Jessica Mink SAO sdss_id ra1950 dec1950 magu magg magr magi magz type arcsec ------------------ ------------ ------------ ----- ----- ----- ----- ----- ---- ------ 587726031184723987 13:27:56.432 +01:28:47.84 14.79 12.63 14.46 14.54 13.18 6 145.08 588848901533138990 13:27:17.801 +01:21:13.37 14.89 14.42 14.01 20.99 14.42 3 591.95 587726031184658473 13:27:16.843 +01:30:51.90 14.95 14.87 12.10 14.05 12.84 6 513.65 588848901533139055 13:27:44.230 +01:20:32.61 15.02 13.84 13.44 13.40 13.23 6 420.85 587726031184658524 13:27:34.934 +01:33:18.39 15.13 13.99 13.57 15.52 13.46 6 402.89 . . . 588848901533204692 13:28:19.730 +01:23:33.62 20.01 18.60 18.13 17.80 17.61 3 526.65 587726031184658644 13:27:25.421 +01:33:49.88 20.02 18.82 18.34 18.00 17.75 3 512.73 587726031184724026 13:28:05.762 +01:31:01.41 20.02 18.48 17.38 16.84 16.51 3 337.05 588848901533139130 13:27:37.225 +01:26:11.91 20.14 18.58 18.00 17.76 17.64 6 183.23 587726031184658553 13:27:18.488 +01:31:12.22 20.15 19.93 19.44 19.21 18.81 3 499.82

Find the closest SDSS source to 10:00:00 +1:00:00 J2000: ssdss -ha 10:00:00 +1:00:00 J2000
produces the following: ssdss WCSTools 3.9.0, 16 September 2013, Jessica Mink SAO Find closest star SDSS 10:00:00.000 +01:00:00.00 J2000 r= +00:02:00.0 at epoch 2000.0000 SDSS_number RA2000 Dec2000 Magu Magg Magr Magi Magz Type Arcsec 587728950121268151 10:00:00.020 +00:59:46.57 26.97 23.06 22.05 23.56 20.55 8 13.43

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