From: Russet McMillan Subject: 3.5m Night Log 20040116 Date: Sat, 17 Jan 2004 05:32:07 -0700 (MST) Apache Point Observatory 3.5m Telescope Night Log Friday, January 16, 2004 ACTUAL ASTRONOMER OBSERVER(S) INSTRUMENT START FINISH -------------------------------------------------------------------- E.Ellingson E.Ellingson,A.Hicks, DIS --:-- --:-- S.Fawcett G.Richards D.Johnston DIS --:-- --:-- INST SCHEDULED WEATH EQUIP OBS DAY NOT USED I/RO/DN START FINISH D B D B D B USE D B --------------------------------------------------------------------- CU02/R 18:17 00:15 6.0 0 0 0 0 0 0 0 0 PU03/R 00:15 06:09 2.5 3.4 0 0 0 0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- 1st Half Observing Specialist: J.Barentine Clouds, fog, wind, etc. At Jon Davis' request, I took a slew of GRIMages to check whether the vibration from drilling ventilation holes in the instrument's housing today caused the dropped quad problem to worsen (verdict: no. In fact, true to its flaky form, I've taken several dozen images now in which all four quads appear consistently functional.) 2nd Half Observing Specialist: R.McMillan Second half started out with the same foggy conditions. Around 03:30, the wind picked up, the clouds cleared, and the humidity dropped. But even though conditions were technically usable, I felt very uncomfortable about the feel of the weather and the appearance of the radar images. While I was outside trying to make up my mind, I felt some snow on my face. With the help of a flashlight, I decided the sparse snowflakes were coming from the sky and not just blowing around from the trees. Shortly after that, the clouds thickened up again, and the observer went home. ------- FAILURE LOG ------- PROG INST FAILURE MODE TIME (SEGDFVO) TI/SHU START FINISH DESCRIPTION ----------------------------------------------------------------------- ---------------- FOCUS LOG --------------- Air/Truss Wind Time Instrument Focus Az El Temp-C Dir MPH filt FWHM --------------------------------------------------------------------- -------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:01 30 30 9 326 (NW) 11558 Overcast none 17:01 29 29 7 300 (WNW) 13654 Overcast none 18:01 29 29 12 346 (NNW) 5301 Overcast none 19:01 29 28 7 299 (WNW) 3452 MstlyCldy none 20:01 27 25 21 356 (N) 35 MstlyCldy none 21:01 26 24 19 355 (N) 0 PtlyCldy none 22:01 26 25 20 347 (NNW) 0 Overcast fog 23:01 27 27 12 19 (NNE) 13948 Overcast fog 00:01 26 25 5 17 (NNE) 44 cloudy fog 01:01 26 25 11 354 (N) 36 cloudy fog 02:01 26 23 9 26 (NNE) 34 cloudy fog 03:01 25 21 22 69 (ENE) 344 mstly cldy fog 04:01 23 17 21 53 (NE) 397 ptly cldy lt. snow 05:01 23 15 23 72 (ENE) 365 cloudy lt. snow Note: the wind was coming from the azimuth listed. The convention used is north=0 degrees, east=90 degrees. The dust count is particles > 1u per 0.1 cubic feet. TELESCOPE STATUS Telescope drives operational. Current Remark version: 2.85b Current guide software version: guider v4.1b4 Current TCC version: 2.7.2 Current TUI version: TUI-0.81