INT OBSERVING LOG (ISAAC NEWTON GROUP, LA PALMA) TELESCOPE: INT DATE: 20010824 TAPE NR: OBSERVER: P. Groot PROGRAMME: The faint sky variability survey PATT/CAT REF.: WFS01 TELESCOPE OPERATOR: none SUPPORT ASTRONOMER: C. Benn TELESCOPE FOCUS: 43.90 mm CALIBRATE RESULTS: not specified INSTRUMENT: WFC WFC FILTER WHEEL: B,V,r,I,i,Z WEATHER: (1st half) good (2nd half) good CLOUD COVER (%): (1st half) 0 (2nd half) 0 DUST (0-2): (1st half) 1 (2nd half) 1 SEEING (arcsec): (1st half) 1.1 (2nd half) 1.1 DOME OPENED (UT): 19:30 METEOROLOGICAL PARAMETERS LT AirT Hum% Wspd Gust Wdir Press LocT IntT Mirr LocRH IntRH 20:00 11.9 70 23.0 27.5 250 771.9 12.0 15.4 16.0 69 57 21:00 10.7 78 28.5 30.6 285 772.1 11.3 14.4 15.4 70 61 22:00 11.7 41 20.3 20.7 264 772.7 11.9 13.6 15.8 48 47 23:00 13.7 16 19.7 21.3 245 773.2 14.2 14.7 15.9 15 16 00:00 13.9 14 16.2 17.3 257 773.2 13.8 15.1 15.9 14 13 01:00 12.9 20 18.4 19.4 248 772.9 12.8 14.6 15.9 20 18 02:00 13.5 11 18.3 18.9 244 772.7 13.3 14.4 16.1 12 13 03:00 13.4 15 19.2 20.6 246 772.2 13.6 14.5 16.0 12 14 04:00 12.1 19 28.5 29.5 268 771.7 12.8 13.9 15.7 16 15 SUNSET(UT) 19:50 EVENING TWILIGHT(UT) 21:05 MORNING TWILIGHT(UT) 05:23 SUNRISE(UT) 06:38 MOON'S QUARTER (1-4) 1 DISK % OF ILLUM. 41 DARK TIME 08:18 TWILIGHT TIME 02:30 MOONRISE(UT) No moonrise within sunset-sunrise MOONSET(UT) 23:53 TIME LOST(WEATHER): 00:00 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 277303 Bias frame 0:00:00.00 +00:00:00.0 J2000.00 1.000 180.0 13:36:43.7 0.0 B Harris 1 x 1 277304 Dark frame 0:00:00.00 +00:00:00.0 J2000.00 1.000 180.0 13:37:50.0 15.0 B Harris 1 x 1 277305 Bias frame 0:00:00.00 +00:00:00.0 J2000.00 1.000 180.0 13:42:49.6 0.0 i Sloan 1 x 1 277306 Bias 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:37:26.9 0.0 i Sloan 1 x 1 277307 Preflash only 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:38:39.4 0.0 i Sloan 1 x 1 277308 Preflash only 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:39:52.5 0.0 i Sloan 1 x 1 277309 Bias 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:41:04.0 0.0 i Sloan 1 x 1 277310 Bias 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:42:25.5 0.0 i Sloan 1 x 1 277311 Preflash only 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:43:18.9 0.0 i Sloan 1 x 1 277312 Preflash only 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:44:12.4 0.0 i Sloan 1 x 1 277313 Bias 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:45:05.2 0.0 i Sloan 1 x 1 277314 Bias 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:50:29.6 0.0 i Sloan 1 x 1 277315 Preflash only 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:51:33.0 0.0 i Sloan 1 x 1 277316 Preflash only 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:52:31.2 0.0 i Sloan 1 x 1 277317 Bias 0:00:00.00 +00:00:00.0 J2000.00 4.551 180.0 15:53:27.3 0.0 i Sloan 1 x 1 277318 Skyflat 1s B 16:59:59.99 +41:00:00.0 J2000.00 1.023 180.0 19:57:23.9 2.4 B Harris 1 x 1 277319 Skyflat 1s B 17:00:00.00 +40:59:59.9 J2000.00 1.023 180.0 19:59:24.3 1.1 B Harris 1 x 1 277320 Skyflat 1s B 17:00:00.00 +41:00:00.0 J2000.00 1.023 180.0 20:00:32.1 1.1 B Harris 1 x 1 277321 Skyflat 1.5s B 17:00:00.00 +40:59:59.9 J2000.00 1.023 180.0 20:01:43.4 1.6 B Harris 1 x 1 277322 Skyflat 2s B 17:00:00.00 +41:00:00.0 J2000.00 1.023 180.0 20:03:00.8 2.1 B Harris 1 x 1 277323 Skyflat 3.5s B 17:00:00.00 +40:59:59.9 J2000.00 1.024 180.0 20:05:48.0 3.6 B Harris 1 x 1 277324 Skyflat 3.5s V 17:00:00.00 +41:00:00.0 J2000.00 1.024 180.0 20:07:02.5 3.6 V Harris 1 x 1 277325 Skyflat 5s V 17:00:01.76 +41:00:19.9 J2000.00 1.024 180.0 20:08:35.5 4.6 V Harris 1 x 1 277326 Skyflat 10s V 17:00:03.53 +41:00:40.0 J2000.00 1.024 180.0 20:09:45.8 10.1 V Harris 1 1 x 1 277327 Skyflat 17s V 17:00:05.30 +41:00:59.9 J2000.00 1.024 180.0 20:11:00.6 17.1 V Harris 1 1 x 1 277328 Skyflat 25s V 17:00:07.06 +41:01:20.0 J2000.00 1.024 180.0 20:12:16.2 25.1 V Harris 1 1 x 1 277329 Skyflat 20s I 17:00:07.07 +41:01:19.9 J2000.00 1.025 180.0 20:14:30.2 20.1 I INT-WFC 1 1 x 1 277330 Skyflat 35s I 17:00:05.30 +41:00:59.9 J2000.00 1.025 180.0 20:15:44.7 35.1 I INT-WFC 1 1 x 1 277331 Skyflat 50s I 17:00:03.53 +41:00:39.9 J2000.00 1.026 180.0 20:17:16.8 50.1 I INT-WFC 1 1 x 1 277332 Skyflat 80s I 17:00:01.76 +41:00:19.9 J2000.00 1.026 180.0 20:19:07.3 80.0 I INT-WFC 1 1 x 1 277333 Focus run 18:43:09.00 -00:08:49.9 J2000.00 1.206 180.0 20:28:12.7 10.1 V Harris 1 1 x 1 277334 m27 V 19:59:36.20 +22:43:15.8 J2000.00 1.183 180.0 20:34:16.0 299.9 V Harris 1 1 x 1 277335 m27 B 19:59:36.20 +22:43:16.0 J2000.00 1.166 180.0 20:40:36.3 299.5 B Harris 1 1 x 1 277336 m27 I 19:59:36.19 +22:43:16.0 J2000.00 1.149 180.0 20:47:03.6 299.8 I INT-WFC 1 1 x 1 277337 ngc6946 V 20:34:52.81 +60:09:13.8 J2000.00 1.321 180.0 20:55:18.6 299.9 V Harris 1 1 x 1 277338 ngc6946 B 20:34:52.82 +60:09:13.6 J2000.00 1.308 180.0 21:01:38.0 299.9 B Harris 1 1 x 1 277339 ngc6946 I 20:34:52.82 +60:09:13.6 J2000.00 1.296 180.0 21:07:57.4 299.7 I INT-WFC 1 1 x 1 277340 f_75 V 18:32:40.00 +35:25:00.0 J2000.00 1.007 180.0 21:16:41.9 599.3 V Harris 1 1 x 1 277341 f_74 V 18:33:29.99 +36:35:00.1 J2000.00 1.009 180.0 21:28:46.5 599.4 V Harris 1 1 x 1 277342 f_75 V 18:32:40.00 +35:24:59.9 J2000.00 1.008 180.0 21:40:48.1 599.4 V Harris 1 1 x 1 277343 f_72 V 18:30:00.00 +36:00:00.0 J2000.00 1.014 180.0 21:52:48.0 599.5 V Harris 1 1 x 1 277344 f_73 V 18:33:00.00 +35:59:59.9 J2000.00 1.018 180.0 22:04:54.8 599.6 V Harris 1 1 x 1 277345 f_73 V 18:33:00.00 +36:00:00.0 J2000.00 1.025 180.0 22:16:22.0 599.5 V Harris 1 1 x 1 277346 f_74 V 18:33:29.99 +36:34:59.9 J2000.00 1.036 180.0 22:28:22.6 599.8 V Harris 1 1 x 1 277347 f_72 V 18:30:00.00 +35:59:59.9 J2000.00 1.050 180.0 22:40:25.5 599.6 V Harris 1 1 x 1 277348 f_75 V 18:32:40.00 +35:24:59.9 J2000.00 1.061 180.0 22:52:59.9 599.5 V Harris 1 1 x 1 277349 f_74 V 18:33:29.99 +36:34:59.9 J2000.00 1.078 180.0 23:05:00.7 599.2 V Harris 1 1 x 1 277350 f_74 V 18:33:30.00 +36:34:59.9 J2000.00 1.097 180.0 23:16:25.2 599.5 V Harris 1 1 x 1 277351 f_74 V 18:33:29.99 +36:35:00.0 J2000.00 1.117 180.0 23:27:51.0 599.5 V Harris 1 1 x 1 277352 f_73 V 18:33:00.00 +36:00:00.0 J2000.00 1.143 180.0 23:39:52.9 599.4 V Harris 1 1 x 1 277353 f_72 V 18:30:00.00 +36:00:00.0 J2000.00 1.179 180.0 23:51:54.6 599.0 V Harris 1 1 x 1 277354 f_76 V 23:42:23.50 +28:10:00.0 J2000.00 1.188 180.0 00:06:23.0 599.5 V Harris 1 1 x 1 277355 f_79 V 23:50:20.00 +28:20:00.0 J2000.00 1.176 180.0 00:18:26.5 599.4 V Harris 1 1 x 1 277356 f_79 V 23:50:20.00 +28:20:00.0 J2000.00 1.146 180.0 00:29:51.6 599.5 V Harris 1 1 x 1 277357 f_78 V 23:47:40.00 +28:09:59.9 J2000.00 1.113 180.0 00:41:53.0 599.5 V Harris 1 1 x 1 277358 f_77 V 23:44:55.00 +28:10:00.0 J2000.00 1.085 180.0 00:53:54.5 599.4 V Harris 1 1 x 1 277359 f_79 V 23:50:19.99 +28:20:00.0 J2000.00 1.074 180.0 01:05:55.1 599.4 V Harris 1 1 x 1 277360 f_76 V 23:42:23.49 +28:09:59.9 J2000.00 1.046 180.0 01:17:56.6 599.5 V Harris 1 1 x 1 277361 f_78 V 23:47:40.00 +28:09:59.9 J2000.00 1.038 180.0 01:29:57.6 599.4 V Harris 1 1 x 1 277362 f_77 V 23:44:55.00 +28:10:00.0 J2000.00 1.024 180.0 01:41:59.0 599.4 V Harris 1 1 x 1 277363 f_76 V 23:42:23.49 +28:09:59.9 J2000.00 1.012 180.0 01:54:39.3 599.5 V Harris 1 1 x 1 277364 f_76 V 23:42:23.50 +28:10:00.0 J2000.00 1.006 180.0 02:06:05.3 599.6 V Harris 1 1 x 1 277365 f_79 V 23:50:19.99 +28:20:00.0 J2000.00 1.005 180.0 02:18:06.8 599.5 V Harris 1 1 x 1 277366 f_78 V 23:47:40.00 +28:10:00.0 J2000.00 1.001 180.0 02:30:09.3 599.4 V Harris 1 1 x 1 277367 f_77 V 23:44:55.00 +28:09:59.9 J2000.00 1.000 180.0 02:42:11.7 599.4 V Harris 1 1 x 1 277368 f_77 V 23:44:54.99 +28:10:00.0 J2000.00 1.002 180.0 02:54:31.7 599.5 V Harris 1 1 x 1 277369 f_77 V 23:44:55.00 +28:09:59.9 J2000.00 1.006 180.0 03:05:58.6 598.9 V Harris 1 1 x 1 277370 f_78 V 23:47:40.00 +28:09:59.9 J2000.00 1.011 180.0 03:17:59.3 599.4 V Harris 1 1 x 1 277371 f_76 V 23:42:23.50 +28:10:00.0 J2000.00 1.023 180.0 03:29:59.5 599.5 V Harris 1 1 x 1 277372 f_79 V 23:47:37.50 +28:15:00.1 J2000.00 1.028 180.0 03:42:00.9 599.3 V Harris 1 1 x 1 Tel. shift. 277373 f_79 V 23:50:19.99 +28:20:00.0 J2000.00 1.040 180.0 03:55:48.4 599.5 V Harris 1 1 x 1 277374 f_79 V 23:50:20.00 +28:20:00.1 J2000.00 1.054 180.0 04:07:14.7 599.5 V Harris 1 1 x 1 277375 M31-microfld1 0:43:59.99 +41:33:59.8 J2000.00 1.037 180.0 04:20:03.4 319.6 r Sloan 1 1 x 1 277376 M31-microfld1 0:44:00.00 +41:33:59.9 J2000.00 1.041 180.0 04:26:43.6 319.2 r Sloan 1 1 x 1 277377 M31-microfld1 0:44:00.00 +41:33:59.9 J2000.00 1.045 180.0 04:33:22.8 319.9 i Sloan 1 1 x 1 277378 M31-microfld1 0:43:59.99 +41:33:59.9 J2000.00 1.050 180.0 04:40:03.5 319.8 i Sloan 1 1 x 1 277379 M31-microfld2 0:43:09.99 +40:58:15.0 J2000.00 1.056 180.0 04:47:45.3 319.8 r Sloan 1 1 x 1 277380 M31-microfld2 0:43:10.00 +40:58:15.0 J2000.00 1.063 180.0 04:54:23.8 319.7 r Sloan 1 1 x 1 277381 M31-microfld2 0:43:10.00 +40:58:15.0 J2000.00 1.070 180.0 05:01:02.4 319.8 i Sloan 1 1 x 1 277382 M31-microfld2 0:43:09.99 +40:58:14.9 J2000.00 1.078 180.0 05:07:40.9 319.7 i Sloan 1 1 x 1 277383 f_76 V 23:42:23.50 +28:10:00.1 J2000.00 1.226 180.0 05:16:28.4 599.5 V Harris 1 1 x 1