Subject: 3.5m Night Log 20240119 From: cgray@apo.nmsu.edu Date: Sat, 20 Jan 2024 14:00:16 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Friday, January 19, 2024 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- AP01 S.Merkowitz R.McMillan NM08 A.Peck E.Nielsen BY02 B.Boizelle B.Boizelle WY03 A.Cavanaugh A.Cavanaugh UW02 P.Yoachim P.Yoachim ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- AP01 APOLLO 17:32 18:30 NM08 ECHELLE 18:34 22:36 BY02 TripleSpec 22:40 00:08 WY03 TSPEC 00:08 03:56 UW02 Kosmos 04:10 06:05 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- AP01/R 17:32 18:32 0 0 0 0 0.0 1.0 0 0 NM08/R 18:32 22:40 0 0 0 0 0.0 4.1 0 0 BY02/R 22:40 00:10 0 0 0 0 0.0 1.5 0 0 WY03/R 00:10 03:56 0 0 0 0 1.1 2.7 0 0 UW02/R 04:02 06:56 0 0 0 0 2.9 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: C.Gray Another night of excellent seeing!! We did have clouds all night but they were very uniform and we were able to punch through them with each instrument. We did have some slew problems tonight with alitude. At 18:30 we moved from 70 downward and had a motion error at 63. After reinitializing the axis there was no other issue. Then at 22:42 I had what I assume to be a freewheeling of tspec. After only a few degrees there was a rotational motion error. After I corrected it and when to slew, the alt drive game a motion error even though I hadn't moved the drives yet. This was at 54 deg alt. I sent an email about it. ------- FAILURE LOG ------- FAILURE MODE TIME PROG INSTR TI/SHU START FINISH DESCRIPTION ---------------------------------------------------------------------- ---------------- FOCUS LOG --------------- Time Instrument Focus Az El Temp Strc Prim Sec Air filt FWHM -------------------------------------------------------------------------- 17:31 APOLLO 500( 1890) 50 77 3.7 6.7 5.8 6.3 4.9 530 1.10 18:43 ecamera 379( -91) -123 61 4.4 4.9 4.8 4.3 4.3 ND2 0.63 22:55 tcamera 410( 1130) -49 52 3.4 3.5 4.1 3.5 3.7 Ks 0.93 00:32 tcamera 391( 1081) 85 65 3.2 2.0 3.7 3.0 3.1 Ks 0.82 04:18 kosmos 258( 681) -126 70 3.6 1.6 3.0 2.3 2.5 -- 0.97 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 45 19 7 262 (W) 351 mstly clr none 17:00 40 20 6 261 (W) 349 ptly cldy none 18:00 39 19 9 265 (W) 357 ptly cldy none 19:00 40 17 9 267 (W) 416 cloudy none 20:00 40 17 12 239 (WSW) 416 cloudy none 21:00 39 18 10 227 (SW) 436 cloudy none 22:00 39 18 10 228 (SW) 461 cloudy none 23:00 39 18 11 232 (SW) 535 cloudy none 00:00 39 18 5 209 (SSW) 544 cloudy none 01:00 39 17 12 203 (SSW) 531 cloudy none 02:00 38 18 11 205 (SSW) 595 cloudy none 03:00 39 18 8 186 (S) 603 cloudy none 04:00 37 18 8 187 (S) 896 cloudy none 05:00 37 18 6 208 (SSW) 1132 cloudy none 06:00 38 18 9 188 (S) 1506 cloudy 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 > 1u per 0.1 cubic feet. ---------- TELESCOPE SOFTWARE ---------- Current TCC version: 1.4.2 Current HUB version: v20171231_01 Current TUI version: 3.1.3