Date: Sun, 25 Apr 1999 07:00:09 -0600 (MDT) From: Karen Gloria Subject: 3.5-m obslog 990424 SATURDAY APRIL 24, 1999 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH Chanover Chanover, Hillman, AOTF 4/23-24 01:15 04:54 Murphy INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B NM01/S 21:08 04:54 0 4.1 0 0 1.0 2.6 0 0 0 (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) 1st half observing specialist: Camron Hastings 2nd half observing specialist: Karen Gloria The first half of the night was rainy and cloudy. The clouds parted after midnight, and we opened at 01:15 MDT under clear skies. Observing went very well, the AOTF folks got a lot of images. It took a long time to get pointed on Mars, however. I had to use a +30", -90" instrument offset to get it on the 30" AOTF detector. Note: a +X offset moves the star to the left, a +Y offset moves the star up. Telescope pointing was fine, so I think the difficulty in finding Mars must be due to using geocentric rather than topocentric coordinates for the planets. OBSERVER COMMENTS NM01 (Chanover): "We had a successful half night." FOCUS LOG APRIL 24 1999 Wind Time Inst Focus Az El #Temp Dir MPH filt FWHM " 01:51 AOTF 0(5701) 195 40 2.7/4.8 268 11 ? 1.5 02:51 AOTF +200(5818) 216 38 2.2/2.8 265 16 ? 1.3 #First temp is air, second temp is telescope. WEATHER APRIL 24 1999 Wind Time Temp F Dewp F MPH Direction Dust Sky Precip. 16:01 54 31 12 173 (S) 2671 overcast showers 17:01 50 34 13 193 (SSW) 1711 overcast showers 18:01 46 38 10 144 (SE) 1374 overcast showers 19:01 43 40 24 217 (SW) 1402 overcast showers 20:01 45 37 24 176 (S) 2663 overcast showers 21:01 42 40 17 233 (SW) 2265 overcast showers 22:01 40 38 20 304 (NW) 2862 overcast showers 23:01 38 38 15 265 (W) 178 overcast showers 00:01 37 31 16 290 (WNW) 1957 ptly cldy none 01:01 36 25 17 260 (W) 1334 clear none 02:01 37 23 14 267 (W) 1492 clear none 03:01 36 19 12 263 (W) 1063 clear none 04:01 35 21 12 251 (WSW) 1234 clear none 05:01 34 21 14 255 (WSW) 1347 clear 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: 2.52 Current guide software version: GIm Ctrlv3.0b17. - Camron Hastings, Karen Gloria