Date: Thu, 18 Dec 1997 07:09:24 -0700 (MST) From: Charles Corson Subject: 3.5m obslog 971217 WEDNESDAY DECEMBER 17, 1997 APACHE POINT OBSERVATORY 3.5m OBSERVING LOG ACTUAL ASTRONOMER INSTRUMENT DATE START FINISH Corson DIS 12/17 18:00 19:00 Wyse Grim 12/17 19:15 INST SCHEDULED OBS WEATH EQUIP DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B PU01/O 18:28 18:56 0.7 0 0 0 0 0 0 0 0 JH01/O 21:27 04:15 1.7 8.7 0 0 0 0 0 0 0 ACTIVITY/FAILURE LOG We again opened with good conditions and good seeing. I observed for the Turner Lens Monitoring project and obtained data on three lens targets. Rosie Wyse and G. Gilmore observed using Grim. The seeing and focus was reasonably stable so, the observing was very efficient. The GRB optical transient was observed again, R & I bands. At about 1:00am, cirrus began to move in the clouds remained with us till shortly before flats were to be observed. The seeing was good and the bright star was minimized tonight. The data should go deeper than previous nights for the R-band, but only a few exposures in I were made. With the clouds, we tried to concentrate on R. USER COMMENTS: Rosie Wyse No Problems (except for those pesky clouds). FOCUS LOG DECEMBER 17, 1997 Time Inst Focus Az El Temp Wind Filter FWHM deg C dir mph arc-sec 17:55 DIS -60(6277) 209 57 4.3/5.4 315 14 r 1.2 17:25 Grim -50(6524) 127 75 4.3/4.5 315 13 J 0.7 23:20 Grim 25(6347) 120 75 4.4/3.9 282 10 K' 0.76 03:35 Spi -30(6265) 25 61 5.4/5.3 281 14 R 1.1 WEATHER LOG DECEMBER 17, 1997 Time Temp Dewpt Windspeed Dir Dust Sky Precip. 16:01 43 -22 8 323 (NW) 113 clear 17:01 41 -24 5 311 (NW) 37 clear 18:01 40 -23 12 301 (WNW) 40 clear 19:01 38 -16 12 317 (NW) 35 clear 20:01 40 -19 7 294 (WNW) 66 clear 21:01 41 -17 7 293 (WNW) 77 clear 22:01 41 -25 12 303 (WNW) 66 clear 23:01 38 -12 10 268 (W) 85 clear 00:01 40 -8 7 269 (W) 104 clear 01:01 41 -4 7 265 (W) 171 cirrus 02:01 42 -18 10 279 (W) 99 cirrus 03:01 43 -21 8 265 (W) 56 cirrus 04:01 42 -25 15 284 (WNW) 48 cirrus 05:01 42 -21 13 291 (WNW) 42 cirrus TELESCOPE STATUS Operational: Configured for normal left Nasmyth operation. Current Software: GRIM ICC: grimII.coma(2.5), Remark: 2.36, TCC: 2.0 Guider: GIm Ctrlv3.0b11 Charles