From: Russet McMillan Subject: 3.5m Night Log 990806 Date: Sat, 7 Aug 1999 05:31:22 -0600 (MDT) FRIDAY AUGUST 6, 1999 APACHE POINT OBSERVATORY OBSERVING LOG ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH Marley Holman SPIcam 8/6-7 21:30 00:58 Davidsen Tsvetanov DIS 8/7 01:23 02:11 INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B NM01/R 21:30 01:10 1.7 - 0 - 2.0 - 0 0 - JH03/R 01:10 04:49 0.3 2.4 0.3 0 0.7 0 0 0 0 (note: times listed include instrument change time) ACTIVITY LOG (* means a trouble report has been issued or appended to) Observing specialist: R. McMillan, L. Wells The telescope was opened for several periods of successful observing between bouts of high humidity. While we were open, the seeing ranged from excellent to moderate. A problem with the setup of the DIS slit viewer cost about 15 minutes of potential observing time until we figured it out. The JHU observers were able to start Remark without any problems associated with the new JHU firewalls. This was the first usable night since the difficulty with the tertiary mirror on 7/31, but it was apparent that the telescope pointing was quite good despite our concerns that the tertiary tip/tilts might have been affected. Some odd aberrations did appear in focus images with both DIS and SPIcam (see /export/images/kbo/7/focus.0018.fits), but in-focus images appeared reasonable. A special note for remote observers: one of tonight's observers attempted to slew at the same time that the observing specialists were about to open the mirror covers. This is the *third* time this has happened to me, and in each instance the observers should have known better. All observers have spent time on site, and all should be aware of how many pinch points there are in the dome. The observing specialists are in especially vulnerable positions when opening and closing the dome and/or mirror covers. Although we usually press a stop button at these times for our own protection, NO ONE should attempt to slew when the observing specialist is out in the dome without express permission. This is a vital safety issue, and I would appreciate it if institutional leaders could see that it is brought to the attention of all observers. Please post this paragraph in your control rooms. FOCUS LOG AUGUST 6 1999 Wind Time Inst Focus Az El #Temp Dir MPH filt FWHM " 21:15 SPIcam -350(6351) 145 52 12.6/14.9 13 4 r' 0.85 00:30 SPIcam -250(6413) 185 39 12.4/12.0 330 11 r' 1.47 02:10 DIS -30(6594) 163 56 11.8/11.5 335 10 -- 1.32 #First temp is air, second temp is telescope. WEATHER AUGUST 6 1999 Wind Time Temp F Dewp F MPH Direction Dust Sky Precip. 17:01 60 51 6 273 (W) 258 ptly cldy none 18:01 59 51 7 315 (NW) 325 ptly cldy none 19:01 58 52 8 303 (WNW) 320 mstly clr none 20:01 54 51 8 328 (NNW) 342 mstly clr none 21:01 55 48 9 358 (N) 372 clear none 22:01 55 49 6 343 (NNW) 355 clear none 23:01 54 51 7 348 (NNW) 464 clear none 00:01 54 50 7 345 (NNW) 392 clear none 01:01 54 47 10 322 (NW) 326 clear none 02:01 53 49 6 346 (NNW) 402 clear none 03:01 54 50 7 321 (NW) 348 cirrus none 04:01 53 50 7 307 (NW) 356 cirrus none 05:01 54 51 1 328 (NNW) 515 mstly clr 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: 2.55b5. Current guide software version: GIm Ctrlv3.0b27. - Russet McMillan, Lisa Wells