Date: Sat, 10 Jan 1998 06:17:12 -0700 (MST) From: Karen Gloria Subject: 3.5-m obslog 980109 FRIDAY JANUARY 9, 1998 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Turner DIS 1/9 18:42 19:22 Harper GRIM2 1/9-10 19:22 00:10 York SPIcam 1/10 00:10 00:35 INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B PU01/S 18:42 19:22 - 0.7 - 0 - 0 0 - 0 UC09/R 19:22 00:10 - 4.8 - 0 - 0 0 - 0 UC01/R 00:10 05:39 0 0.4 0.6 4.5 - 0 0 - 0 (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) The telescope was opened at 17:20 MST. The observers were myself for PU01, Rhodri Evans for UC09, and Connie Rockosi for UC01. I observed two gravitational lenses for PU01. Rhodri did polarimetry with GRIM2 (see below). The sky clouded over right after Connie got on the telescope, so she wasn't able to get any data (the telescope was closed at 00:35 MST). the sky remained cloudy for the rest of the night. OBSERVER COMMENTS Rhodri Evans: "I was scheduled on the telescope from 19:35 until 23:55 using GRIM II to do imaging polarimetry in K' of the reflection nebula NGC 1999. For once I was lucky with the weather, my time remained almost perfectly clear, apart from some thin broken cloud/cirrus around 22:00. The instrument and polarimeter worked well, my scripts only hung a couple of times which is about normal for several hours of running them, so on the whole I am very pleased with the way my allotted time went. I think I obtained good data, and the instruments and telescope worked without any problems." FOCUS LOG JANUARY 9 1997 Best Telescope Wind Seeing Time Inst Focus Az El #Temp Dir MPH filter FWHM " 18:20 DIS +50(6205) 244 40 -1.4/-0.9 270 11 r 1.4 19:30 GRIM2 -25(6206) 126 34 -2.0/-2.0 225 12 K' 0.9 #The first temp is air, the second is truss, both in degrees Celsius WEATHER JANUARY 9 1997 Wind Time Temp F Dewp. F MPH. Dir. Dust Sky Precip. 16:01 33 7 5 275 (W) 128 clear none 17:01 29 1 7 287 (WNW) 112 clear none 18:01 29 6 15 292 (WNW) 153 clear none 19:01 29 12 9 257 (WSW) 257 clear none 20:01 28 13 13 229 (SW) 241 clear none 21:01 28 13 8 207 (SSW) 211 clear none 22:01 29 13 16 264 (W) 153 cirrus none 23:01 29 17 10 266 (W) 115 clear none 00:01 29 17 11 270 (W) 105 clear none 01:01 29 18 12 269 (W) 119 mstly cldy none 02:01 30 17 13 277 (W) 139 mstly cldy flurries 03:01 30 17 10 260 (W) 187 mstly cldy none 04:01 30 18 10 265 (W) 196 mstly cldy none 05:01 29 18 12 279 (W) 227 mstly cldy none 06:01 29 21 12 273 (W) 163 mstly cldy none note: the wind was coming from the azimuth listed. The convention used is north=0 degrees, east=90 degrees. The dust count is particles > 1 micron per 0.1 cu. ft. 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: 2.36. Current guide software version: GIm Ctrlv3.0b11. -Karen