From: "N.C. Hastings" Subject: 3.5m Night Log 990526 Date: Thu, 27 May 1999 05:11:18 -0600 Apache Point Observatory, Sunspot, NM Wednesday, May 26th, 1999 3.5-meter Night Observing Log Actual ---------------------------------------------------------------------- ASTRONOMER OBSERVER(S) INSTRUMENT DATE START FINISH ---------------------------------------------------------------------- B.Gillespie Gloria,Hastings Guider 5/26-27 21:41 04:20 McMillan ---------------------------------------------------------------------- INST SCHEDULED WEATH EQUIP OBS DAY NOTUSED I/RS/DN START FINISH D B D B D B USE D B ---------------------------------------------------------------------- EN01/R 21:41 04:20 - 3.8 - 0 - 2.9 0 - 0 -------------- Activity Log -------------- Observing Specialists: K.Gloria, N.C.Hastings, R.McMillan Karen and Russet opened the telescope at 20:00 MST but had to close again due to clouds at 21:00. We did not again get to open up for any length of time until 01:30 MST, although there were a few holes we did try to open for. Camron arrived at 21:00 after a long flight! We adjusted the tertiary tip-tilt values to match those used when the last pointing model was taken. These new values proved to significantly help the pointing at NA2 to values within 10 arcsecs or better. Afterwards, we reworked the instrument block for the guider. We ran into a bug with the new IGOR program for crunching the inst data and Karen attempted to transform the old coordinate data by hand. This proved to be to much of a problem so we gave up until Russ fixes the IGOR bug. Karen is sending him some data and explanations. We then proceeded to fine tune the tertiary tip-tilt values for the NA2 port but again ran into strange consistency issues so we gave up on changing these values. It appears that there is a boresite offset issue or procedure issue for tip-tilt to be straightened out. Currently the NA1 port is pointing as well as it was before, within a few arcecs and the NA2 is better than when we started! FOCUS LOG May 26th 1999 Best Telescope Temp Wind Seeing Time Instrmnt Focus Az El Air/Truss Dir MPH filter FWHM" --------------------------------------------------------------------- 20:35 Guider 1466(6538) 176 64 10.8/12.3 281 10 ND2+R 1.1" 22:30 Guider 2733(6562) -091 49 11.2/11.5 279 09 ND2+R 1.1" 02:10 Guider 4287(6612) 000 32 10.8/10.6 ??? ?? ND3+R 1.1" WEATHER LOG May 26th 1999 Wind Time Temp-F Dewp-F MPH Direction Dust Sky Precip ------------------------------------------------------------------ 16:01 55 31 10 225 (SW) 1134 Ptly Cldy None 17:01 54 31 2 268 (W) 1185 Ptly Cldy None 18:01 58 29 16 268 (W) 1066 Ptly Cldy None 19:01 53 28 11 281 (W) 1168 Ptly Cldy None 20:01 51 27 10 297 (WNW) 1095 Ptly Cldy None 21:01 52 27 9 310 (NW) 999 Ptly Cldy None 22:01 53 27 9 281 (W) 854 Cloudy None 23:01 52 28 7 291 (WNW) 991 Ptly Cldy None 00:01 52 28 8 276 (W) 1013 Cloudy None 01:01 51 28 3 268 (W) 1036 Cloudy None 02:01 51 28 7 290 (WNW) 996 Ptly Cldy None 03:01 51 27 8 275 (W) 910 Ptly Cldy None 04:01 51 28 5 345 (NNW) 936 Ptly 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 for the 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 Ctrl v3.0b 17.out - KAG, NCH, RM