INT OBSERVING LOG (ISAAC NEWTON GROUP, LA PALMA) TELESCOPE: INT DATE: 20001024 TAPE NR: OBSERVER: S. Hodgkin PROGRAMME: wide angle survey PATT/CAT REF.: WFS09+M31 TELESCOPE OPERATOR: SUPPORT ASTRONOMER: - TELESCOPE FOCUS: 46.15 mm CALIBRATE RESULTS: HI 42.58 +/- 3.37, DI -38.64 +/- 1.11, HC 54.76 +/- 2.44, Sky sigma 2.94 INSTRUMENT: WFC WFC FILTER WHEEL: i, r, U, Z, g, KPB WEATHER: (1st half) bad (2nd half) bad CLOUD COVER (%): (1st half) 100 (2nd half) 100 DUST (0-2): (1st half) 0 (2nd half) 0 SEEING (arcsec): (1st half) (2nd half) DOME OPENED (UT): 01:45 METEOROLOGICAL PARAMETERS UT AirT Hum% Wspd Gust Wdir Press LocT IntT Mirr LocRH IntRH 19:00 2.0 100 31.3 35.6 5 768.2 2.2 10.0 10.9 100 63 20:00 4.0 100 34.4 39.3 9 768.5 4.3 9.6 11.2 100 69 21:00 2.9 100 29.7 33.8 1 768.7 3.1 9.7 11.0 100 69 22:00 3.2 100 32.4 40.7 3 768.9 3.3 9.7 11.1 100 69 23:00 2.4 100 32.9 39.9 330 768.9 3.0 9.7 11.1 100 67 00:00 2.5 79 31.6 34.1 6 769.3 2.1 10.2 11.1 93 57 01:00 5.1 35 32.7 34.7 5 769.1 4.2 10.7 11.0 40 49 02:00 2.0 74 37.1 40.0 13 768.7 2.0 8.5 10.6 91 60 03:00 1.1 99 34.2 35.4 22 768.5 1.3 9.9 10.8 99 57 04:00 1.1 93 30.3 33.9 26 768.5 1.2 10.3 10.9 97 56 SUNSET(UT) 18:41 EVENING TWILIGHT(UT) 19:53 MORNING TWILIGHT(UT) 05:59 SUNRISE(UT) 07:12 MOON'S QUARTER (1-4) 4 DISK % OF ILLUM. 8 DARK TIME 10:06 TWILIGHT TIME 02:25 MOONRISE(UT) 05:12 MOONSET(UT) No moonset within sunset-sunrise TIME LOST(WEATHER): 10:06 TIME LOST(TECHNICAL): 00:00 TIME LOST(OTHER): 00:00 COMMENTS: 100% Humidity all night Run no. Object name RA Dec. Equinox AM PA UT Exp. T. Filter Psys Channel Binning Comments 233834 Bias frame 0:00:00.00 +00:00:00.0 A 4.702 180.0 13:09:49.4 0.0 B Kitt Peak 1 x 1 233835 Bias 0:00:00.00 +00:00:00.0 A 1.535 180.0 16:35:58.2 0.0 B Kitt Peak 1 x 1 233836 Bias 0:00:00.00 +00:00:00.0 A 1.535 180.0 16:36:37.9 0.0 B Kitt Peak 1 x 1 233837 Bias 0:00:00.00 +00:00:00.0 A 1.535 180.0 16:37:17.9 0.0 B Kitt Peak 1 x 1 233838 Bias 0:00:00.00 +00:00:00.0 A 1.535 180.0 16:37:56.9 0.0 B Kitt Peak 1 x 1 233839 Bias 0:00:00.00 +00:00:00.0 A 1.535 180.0 16:38:36.0 0.0 B Kitt Peak 1 x 1 233840 Focus run 0:55:00.00 +00:46:13.0 J2000.00 1.143 180.0 00:24:06.7 10.1 i Sloan 1 x 1