INT OBSERVING LOG (ISAAC NEWTON GROUP, LA PALMA) TELESCOPE: INT DATE: 20001025 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) 1000 (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 LT AirT Hum% Wspd Gust Wdir Press LocT IntT Mirr LocRH IntRH 19:00 4.1 95 28.3 31.1 56 769.4 4.2 11.1 11.8 93 62 20:00 3.3 100 19.4 23.3 100 769.5 3.6 11.0 11.9 99 62 21:00 3.3 100 33.1 37.8 42 770.0 3.6 11.3 12.0 100 62 22:00 3.0 100 25.5 36.1 68 770.3 3.3 11.2 12.1 100 61 23:00 3.1 100 35.2 39.6 58 770.7 3.4 11.0 12.1 100 62 00:00 3.3 100 36.0 41.9 73 770.8 3.7 11.0 11.9 100 64 01:00 3.2 100 27.7 31.1 85 770.8 3.5 11.1 11.9 100 63 02:00 3.0 100 31.3 35.8 46 770.9 3.3 11.0 12.1 100 63 03:00 4.2 100 27.5 31.9 45 770.8 4.5 11.0 11.9 100 64 04:00 4.1 100 13.7 15.3 11 770.8 4.4 11.4 11.9 100 64 05:00 2.6 100 28.0 31.0 33 770.5 2.9 11.1 11.8 100 64 SUNSET(UT) 18:40 EVENING TWILIGHT(UT) 19:52 MORNING TWILIGHT(UT) 06:00 SUNRISE(UT) 07:12 MOON'S QUARTER (1-4) 4 DISK % OF ILLUM. 4 DARK TIME 10:08 TWILIGHT TIME 02:24 MOONRISE(UT) 06:12 MOONSET(UT) No moonset within sunset-sunrise TIME LOST(WEATHER): 10:08 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 233841 Bias frame 14:39:59.99 +45:00:00.0 A 1.052 180.0 12:53:30.3 0.0 U RGO 1 x 1 233842 Bias frame 0:00:00.00 +00:00:00.0 A 1.173 180.0 12:55:09.4 0.0 U RGO 1 x 1