From: Russet McMillan Subject: 3.5m Night Log 20011113 Date: Wed, 14 Nov 2001 05:35:59 -0700 (MST) APACHE POINT OBSERVATORY 3.5m Telescope Night Log Tuesday, November 13, 2001 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH ------------------------------------------------------------------- S.Anderson S.Anderson DIS-low --:-- --:-- M.Strauss V.Narayanan DIS-low --:-- --:-- INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RO/DN START FINISH D B D B D B USE D B -------------------------------------------------------------------- UW01/R 17:59 00:00 6.0 0 0 0 0 0 0 0 0 PU02/R 00:00 05:37 5.6 0 0 0 0 0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- 1st Half Observing Specialist: J. Barentine Clouds persisted from afternoon into evening. Opening was out of the question with thick cloud cover and reported virga in the area. The rain sensor triggered at 21:37 with dewpoint=-6.7 C, differential=12.8 C and humidity=38.6%. Just goes to show... 2nd Half Observing Specialist: R. McMillan Second half remained thickly clouded. There was a little snow at 01:20, but the precipitation sensor didn't trigger until a heavier burst of snow at 01:40. The snow was just beginning to accumulate on the ground by the beginning of morning twilight. ---------------- FOCUS LOG --------------- Air/Truss Wind Time Instrument Focus Az El Temp-C Dir MPH filt FWHM ---------------------------------------------------------------------- --------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:01 47 21 19 229 (SW) 297 MstlyCldy none 17:01 45 21 12 213 (SSW) 399 MstlyCldy none 18:01 45 20 14 221 (SW) 175 Overcast none 19:01 44 20 14 218 (SW) 146 Overcast none 20:01 44 22 11 212 (SSW) 150 Overcast none 21:01 44 20 7 266 (W) 288 Overcast none 22:01 43 21 15 223 (SW) 168 Overcast none 23:01 42 18 14 244 (WSW) 215 Overcast none 00:01 42 20 16 225 (SW) 197 cloudy none 01:01 41 21 12 201 (SSW) 208 cloudy snow 02:01 39 24 14 201 (SSW) 211 cloudy none 03:01 37 24 10 215 (SW) 267 cloudy none 04:01 34 27 3 315 (NW) 274 cloudy snow? 05:01 33 28 8 313 (NW) 224 cloudy snow note: the wind was coming from the azimuth listed. The convention used is north=0 degrees, east=90 degrees. The dust count is particles > 1u per 0.1 cubic feet. TELESCOPE STATUS Primary, secondary, and tertiary mirrors in place and collimated. Primary support system operational. Mirror ventilation system in place. Telescope drives operational. Current Remark version: 2.62. Current guide software version: GIm Ctrlv4.1b2. Current TCC version: 2.5.5 Current MC version: v1_7_3.