Date: Fri, 30 Jul 1999 06:07:54 -0600 From: Dan Long Subject: 3.5m obslog 990729 THURSDAY JULY 29, 1999 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH Krisciunas Rest Spicam 7/29 20:20 20:55 Brown Brown Echelle 7/29 23:25 05:20 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B UW02/R 21:39 22:29 - 1.0 - 0 - 0 0 - 0 WS01/R 22:49 04:41 - 0.8 - 0 - 5.3 0 - 0 (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) Observing specialist: Dan Long Armin Rest was the observer for UW02. With the exception of some sky flats during twilight, he was unable to get data as we were closed due to clouds. Jeff Brown had better luck. Not quite an hour into his run it cleared off and he was able to run the rest of the night. He mentioned that this was the best night he'd had in while. OBSERVER COMMENTS FOCUS LOG JULY 29 1999 Wind Time Inst Focus Az El #Temp Dir MPH filter FWHM " 18:45 Opened 20:00 Closed due to clouds 20:20 Opened for flats 20:55 Closed due to clouds 23:25 Opened 23:30 Echelle -100(5860) -1 40.9 14.4/15.7 270 7 ND2 1.18 05:20 Closed #First temp is air, second temp is telescope. WEATHER JULY 29 1999 There were thick mid level clouds in the afternoon which persisted until nearly midnight. The sky quickly cleared starting around 23:20, and remained clear or mostly clear the rest of the night. Winds were light NW, and while humidity was high, it never got to the closing condition. Wind Time Temp F Dewp F MPH Direction Dust Sky 16:01 65 49 18 231 (SW) 416 Partly Cloudy 17:01 69 52 16 211 (SSW) 461 Mostly Cloudy 18:01 63 51 16 222 (SW) 401 Partly Cloudy 19:01 64 50 10 249 (WSW) 451 Partly Cloudy 20:01 61 49 9 257 (WSW) 408 Mostly Cloudy 21:01 61 48 7 260 (W) 419 Cloudy 22:01 60 47 9 269 (W) 432 Cloudy 23:01 59 46 11 266 (W) 500 Mostly Cloudy 00:01 58 46 7 269 (W) 518 Mostly Clear 01:01 57 46 12 298 (WNW) 539 Mostly Clear 02:01 56 47 8 293 (WNW) 511 Clear 03:01 57 48 9 325 (NW) 545 Clear 04:01 56 48 9 316 (NW) 586 Clear 05:01 57 49 10 303 (WNW) 465 Clear 06:01 55 48 5 274 (W) 562 Clear 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: 2.55b5. Current guide software version: GIm Ctrlv3.0b27. Dan