INT OBSERVING LOG (ISAAC NEWTON GROUP, LA PALMA) TELESCOPE: INT DATE: 20010818 TAPE NR: OBSERVER: P. Groot PROGRAMME: The faint sky variability survey PATT/CAT REF.: WFS01 TELESCOPE OPERATOR: M. Azzaro SUPPORT ASTRONOMER: C. Benn TELESCOPE FOCUS: 44.07 mm CALIBRATE RESULTS: not specified INSTRUMENT: WFC WFC FILTER WHEEL: B,V,r,I,i,Z WEATHER: (1st half) poor (2nd half) fair CLOUD COVER (%): (1st half) 70 (2nd half) 0 DUST (0-2): (1st half) 0 (2nd half) 0 SEEING (arcsec): (1st half) 2.5 (2nd half) 1.6 DOME OPENED (UT): 19:00 METEOROLOGICAL PARAMETERS LT AirT Hum% Wspd Gust Wdir Press LocT IntT Mirr LocRH IntRH 20:00 9.9 72 31.1 36.3 308 773.4 9.7 12.7 13.0 75 59 21:00 8.4 84 32.4 35.0 312 773.5 9.1 12.1 13.8 71 65 22:00 8.3 85 35.8 37.8 309 774.0 9.2 11.8 14.7 66 68 23:00 8.6 100 32.5 37.1 309 774.5 8.9 12.0 14.8 100 78 00:00 9.9 100 30.9 33.2 320 774.7 10.2 12.9 14.8 100 81 01:00 8.5 100 29.5 32.8 332 774.5 9.5 13.3 15.0 96 75 02:00 9.6 74 26.0 27.7 308 774.1 10.5 12.6 15.3 66 61 03:00 9.8 73 31.2 33.0 308 773.5 10.2 12.2 15.1 69 62 04:00 9.2 35 30.3 36.3 313 772.7 10.1 11.7 14.7 26 30 05:00 9.7 14 29.5 31.6 317 772.5 10.6 11.6 14.5 12 15 06:00 9.6 19 25.0 28.9 293 772.5 10.5 12.2 14.6 15 16 SUNSET(UT) 19:56 EVENING TWILIGHT(UT) 21:13 MORNING TWILIGHT(UT) 05:19 SUNRISE(UT) 06:35 MOON'S QUARTER (1-4) 4 DISK % OF ILLUM. 0 DARK TIME 08:06 TWILIGHT TIME 02:33 MOONRISE(UT) No Moon all night MOONSET(UT) No Moon all night TIME LOST(WEATHER): 02:55 TIME LOST(TECHNICAL): 00:00 TIME LOST(OTHER): 00:00 Run no. Object name RA Dec. Equinox AM PA UT Exp. T. Filter Psys Channel Binning Comments 276791 Bias frame 0:00:00.00 +00:00:00.0 A 1.540 180.0 13:11:25.9 0.0 B Harris 1 1 x 1 276792 Bias frame 0:00:00.00 +00:00:00.0 A 1.540 180.0 13:14:37.0 0.0 B Harris 1 1 x 1 276793 Bias frame 0:00:00.00 +00:00:00.0 A 1.540 180.0 13:16:47.9 0.0 B Harris 1 1 x 1 276794 Bias 0:00:00.00 +00:00:00.0 A 1.540 180.0 13:29:36.6 0.0 R Harris 1 1 x 1 276795 skyflat B 2s 17:00:00.00 +40:59:59.7 J2000.00 1.028 180.0 19:56:52.5 2.0 B Harris 1 1 x 1 276796 skyflat B 2s 17:00:00.00 +41:00:00.0 J2000.00 1.027 180.0 19:58:13.5 1.1 B Harris 1 1 x 1 276797 skyflat B 1s 17:00:00.00 +41:00:00.0 J2000.00 1.026 180.0 20:00:47.1 1.1 B Harris 1 1 x 1 276798 skyflat B 1s 17:00:00.00 +40:59:59.9 J2000.00 1.026 180.0 20:03:34.3 1.1 B Harris 1 1 x 1 276799 skyflat B 1s 16:59:59.99 +40:59:59.9 J2000.00 1.025 180.0 20:04:49.8 1.0 B Harris 1 1 x 1 276800 skyflat B 1.5s 16:59:59.99 +40:59:59.9 J2000.00 1.025 180.0 20:06:08.9 1.6 B Harris 1 1 x 1 276801 skyflat B 1.5s 17:00:00.00 +40:59:59.8 J2000.00 1.025 180.0 20:07:40.2 1.6 B Harris 1 1 x 1 276802 skyflat V 1.5s 17:00:00.00 +40:59:59.9 J2000.00 1.024 180.0 20:09:15.7 1.6 V Harris 1 1 x 1 276803 skyflat V 2.5s 17:00:00.00 +41:00:00.0 J2000.00 1.024 180.0 20:10:42.0 2.6 V Harris 1 1 x 1 276804 skyflat V 4s 17:00:00.00 +41:00:00.0 J2000.00 1.024 180.0 20:12:06.9 4.1 V Harris 1 1 x 1 276805 skyflat V 7s 17:00:00.00 +41:00:00.0 J2000.00 1.024 180.0 20:13:29.9 7.1 V Harris 1 1 x 1 276806 skyflat V 10s 17:00:01.76 +41:00:19.9 J2000.00 1.024 180.0 20:14:53.6 10.1 V Harris 1 1 x 1 276807 skyflat V 16s 17:00:03.53 +41:00:40.0 J2000.00 1.023 180.0 20:16:32.9 16.1 V Harris 1 1 x 1 276808 skyflat I 12s 17:00:03.53 +41:00:40.0 J2000.00 1.023 180.0 20:18:03.8 12.1 I INT-WFC 1 1 x 1 276809 skyflat I 18s 17:00:01.76 +41:00:20.0 J2000.00 1.023 180.0 20:19:31.3 18.1 I INT-WFC 1 1 x 1 276810 skyflat I 30s 17:00:00.00 +41:00:00.0 J2000.00 1.023 180.0 20:21:36.3 30.1 I INT-WFC 1 1 x 1 276811 skyflat I 50s 16:59:58.23 +40:59:40.0 J2000.00 1.023 180.0 20:23:08.2 50.1 I INT-WFC 1 1 x 1 276812 skyflat I 80s 16:59:56.46 +40:59:20.0 J2000.00 1.023 180.0 20:25:08.6 79.6 I INT-WFC 1 1 x 1 276813 Focus run 18:43:09.00 -00:09:39.6 J2000.00 1.227 180.0 20:41:14.7 10.1 V Harris 1 1 x 1 276814 sa110-364 V 18:43:13.00 -00:12:20.0 J2000.00 1.210 180.0 20:48:53.5 20.1 V Harris 1 1 x 1 276815 sa110-364 B 18:43:12.99 -00:12:20.0 J2000.00 1.206 180.0 20:50:20.2 50.1 B Harris 1 1 x 1 276816 sa110-364 I 18:43:13.00 -00:12:19.7 J2000.00 1.204 180.0 20:52:14.2 20.1 I INT-WFC 1 1 x 1 276817 SA110-364 20s i 18:43:13.00 -00:12:20.0 J2000.00 1.188 180.0 21:01:36.9 20.1 i Sloan 1 1 x 1 276818 SA110-364 20s r 18:43:13.00 -00:12:19.9 J2000.00 1.186 180.0 21:03:10.4 20.1 r Sloan 1 1 x 1 276819 SA110-364 30s z 18:43:13.00 -00:12:20.0 J2000.00 1.183 180.0 21:05:20.2 30.1 z Gunn 1 1 x 1 276820 KS1731-260 60s r 17:34:13.46 -26:05:18.8 J2000.00 1.742 180.0 21:16:05.8 60.1 r Sloan 1 1 x 1 276821 KS1731-260 60s i 17:34:13.47 -26:05:18.8 J2000.00 1.745 180.0 21:19:03.0 60.1 i Sloan 1 1 x 1 276822 KS1731-260 60s z 17:34:13.47 -26:05:18.7 J2000.00 1.750 180.0 21:23:10.2 60.1 z Gunn 1 1 x 1 276823 F_72 60s V 18:29:59.99 +35:59:59.9 J2000.00 1.011 180.0 21:30:21.1 60.0 V Harris 1 1 x 1 276824 F_75 60s V 23:44:59.99 +28:10:00.0 J2000.00 1.188 180.0 00:36:58.3 60.1 V Harris 1 1 x 1 276825 Bias 18:32:40.00 +35:25:00.0 J2000.00 1.242 180.0 00:45:00.5 0.0 V Harris 1 1 x 1 276826 f_77 600s V 23:44:59.99 +28:09:59.9 J2000.00 1.136 180.0 00:52:21.6 599.5 V Harris 1 1 x 1 276827 f_78 V 23:47:39.99 +28:10:00.1 J2000.00 1.113 180.0 01:05:27.8 599.4 V Harris 1 1 x 1 276828 f_79 V 23:50:20.00 +28:20:00.0 J2000.00 1.094 180.0 01:17:53.7 599.4 V Harris 1 1 x 1 276829 f_76 V 23:42:23.50 +28:09:59.9 J2000.00 1.061 180.0 01:29:53.6 599.4 V Harris 1 1 x 1 276830 f_77 V 23:45:00.00 +28:09:59.9 J2000.00 1.048 180.0 01:42:36.0 599.5 V Harris 1 1 x 1 276831 f_78 V 23:47:39.99 +28:09:59.9 J2000.00 1.037 180.0 01:54:38.3 599.5 V Harris 1 1 x 1 276832 f_79 V 23:50:19.99 +28:20:00.0 J2000.00 1.027 180.0 02:06:38.9 599.6 V Harris 1 1 x 1 276833 f_76 V 23:42:23.49 +28:10:00.0 J2000.00 1.012 180.0 02:18:41.3 599.4 V Harris 1 1 x 1 276834 f_77 V 23:45:00.00 +28:10:00.1 J2000.00 1.007 180.0 02:31:32.6 599.0 V Harris 1 1 x 1 276835 f_78 V 23:47:39.99 +28:10:00.0 J2000.00 1.003 180.0 02:43:34.4 599.3 V Harris 1 1 x 1 276836 f_79 V 23:50:20.00 +28:20:00.0 J2000.00 1.001 180.0 02:55:34.6 599.4 V Harris 1 1 x 1 276837 f_76 V 23:42:23.49 +28:09:59.9 J2000.00 1.001 180.0 03:07:38.4 599.6 V Harris 1 1 x 1 276838 f_77 V 23:45:00.00 +28:10:00.0 J2000.00 1.003 180.0 03:22:36.0 599.5 V Harris 1 1 x 1 276839 f_78 V 23:47:40.00 +28:10:00.0 J2000.00 1.007 180.0 03:34:37.4 599.6 V Harris 1 1 x 1 276840 f_79 V 23:50:20.00 +28:20:00.0 J2000.00 1.012 180.0 03:46:39.8 599.4 V Harris 1 1 x 1 276841 f_76 V 23:42:23.49 +28:10:00.0 J2000.00 1.027 180.0 03:58:40.3 599.4 V Harris 1 1 x 1 276842 M31-microfld1 0:43:59.99 +41:34:00.0 J2000.00 1.026 180.0 04:12:20.8 319.7 r Sloan 1 1 x 1 276843 M31-microfld1 0:44:00.00 +41:33:59.9 J2000.00 1.027 180.0 04:18:59.9 319.8 r Sloan 1 1 x 1 276844 M31-microfld1 0:43:59.99 +41:33:59.9 J2000.00 1.029 180.0 04:25:38.8 319.8 i Sloan 1 1 x 1 276845 M31-microfld1 0:44:00.00 +41:34:00.1 J2000.00 1.031 180.0 04:32:16.7 319.7 i Sloan 1 1 x 1 276846 M31-microfld2 0:43:10.02 +40:58:15.0 J2000.00 1.033 180.0 04:39:58.6 319.4 r Sloan 1 1 x 1 276847 M31-microfld2 0:43:10.00 +40:58:15.1 J2000.00 1.037 180.0 04:46:39.0 319.7 r Sloan 1 1 x 1 276848 M31-microfld2 0:43:10.00 +40:58:14.9 J2000.00 1.041 180.0 04:53:16.6 319.8 i Sloan 1 1 x 1 276849 M31-microfld2 0:43:09.99 +40:58:14.9 J2000.00 1.046 180.0 04:59:56.7 319.8 i Sloan 1 1 x 1 276850 f_77 V 23:44:59.99 +28:09:59.9 J2000.00 1.132 180.0 05:08:49.8 599.4 V Harris 1 1 x 1 276851 f_78 V 23:47:40.00 +28:10:00.1 J2000.00 1.155 180.0 05:20:52.2 599.5 V Harris 1 1 x 1 276853 Skyflat 600s z 2:57:59.99 -00:05:59.9 J2000.00 1.159 180.0 05:36:34.5 299.7 z Gunn 1 1 x 1 276854 Skyflat 150s z 2:58:01.33 -00:05:40.1 J2000.00 1.153 180.0 05:44:51.8 150.0 z Gunn 1 1 x 1 276855 Skyflat 150s z 2:58:02.66 -00:05:19.9 J2000.00 1.150 180.0 05:49:13.7 150.0 z Gunn 1 1 x 1 276856 Skyflat 150s z 2:58:04.00 -00:05:00.0 J2000.00 1.147 180.0 05:54:04.8 150.0 z Gunn 1 1 x 1 276857 Skyflat 100s i 2:58:03.99 -00:04:59.9 J2000.00 1.146 180.0 05:57:54.8 100.0 i Sloan 1 1 x 1 276858 Skyflat 100s i 2:58:04.00 -00:04:59.9 J2000.00 1.144 180.0 06:00:59.5 100.0 i Sloan 1 1 x 1 276859 Skyflat 80s i 2:58:04.00 -00:05:00.0 J2000.00 1.143 180.0 06:04:12.5 79.5 i Sloan 1 1 x 1 276860 Skyflat 50s i 2:58:03.99 -00:05:00.0 J2000.00 1.143 180.0 06:07:03.3 50.1 i Sloan 1 1 x 1 276861 Skyflat 20s i 2:58:01.33 -00:05:40.0 J2000.00 1.142 180.0 06:09:03.5 20.1 i Sloan 1 1 x 1 276862 Skyflat 15s i 2:58:02.66 -00:05:19.9 J2000.00 1.142 180.0 06:10:33.4 15.1 i Sloan 1 1 x 1 276863 Skyflat 10s r 2:58:02.66 -00:05:20.0 J2000.00 1.142 180.0 06:11:47.6 10.1 r Sloan 1 1 x 1 276864 Skyflat 10s r 2:58:01.33 -00:05:40.0 J2000.00 1.142 180.0 06:13:21.3 10.1 r Sloan 1 1 x 1 276865 Skyflat 7s r 2:58:02.66 -00:05:20.0 J2000.00 1.141 180.0 06:14:49.9 7.1 r Sloan 1 1 x 1 276866 Skyflat 4s r 2:58:04.00 -00:04:59.9 J2000.00 1.141 180.0 06:16:03.6 3.6 r Sloan 1 1 x 1 276867 Skyflat 2s r 2:58:05.33 -00:04:40.0 J2000.00 1.141 180.0 06:17:18.9 2.1 r Sloan 1 1 x 1