Subject: 3.5m Night Log 20211017 From: ajt@apo.nmsu.edu Date: Mon, 18 Oct 2021 13:33:53 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Sunday, October 17, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM04 S.Kovac S.Kovac,B.Stemock NM07 A.Hedlund A.Hedlund AP01 S.Merkowitz R.McMillan CU09 J.Dexter J.Dexter ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM04 ECHELLE 18:36 20:10 NM07 ECHELLE 20:11 01:06 AP01 APOLLO 01:12 02:10 CU09 TSPEC 02:17 05:10 CU09 TSPEC 06:22 06:46 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM04/R 18:36 20:16 0 0 0 0 0.0 1.7 0 0 NM07/R 20:16 01:10 0 0 0 0 0.0 4.9 0 0 AP01/R 01:10 02:10 0 0 0 0 0.0 1.0 0 0 CU09/R 02:10 07:01 1.1 0 0 0 0.6 3.1 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: A.Townsend There were thin clouds at the start of the night which cleared up for a while and then came back with a vengeance (and much thicker) after 3 AM. We closed at 05:10 due to probably innocuous radar signal but better to be safe as the clouds were too thick to see anything anyway. We were able to open again for a little while during twilight when it cleared up somewhat. Otherwise we had pretty good seeing and the telescope and instruments all behaved well. ------- 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 -------------------------------------------------------------------------- 18:40 ecamera 530( 261) 279 40 10.1 12.0 11.3 11.7 10.4 ND5 0.75 20:26 ecamera 402( -3) 229 69 9.9 9.5 9.9 9.4 9.4 ND4 0.82 01:15 APOLLO 375( 1709) 300 61 9.8 8.6 9.2 8.7 9.0 530 1.00 02:21 tcamera 411( 1235) 305 53 9.4 8.9 9.4 9.1 9.1 Ks 1.10 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 57 32 13 210 (SSW) 1256 ptly cldy none 17:00 58 32 9 224 (SW) 1182 ptly cldy none 18:00 52 31 9 190 (S) 1030 ptly cldy none 19:00 50 31 9 184 (S) 1206 ptly cldy none 20:00 49 32 13 175 (S) 1087 mstly clr none 21:00 51 32 15 183 (S) 1162 ptly cldy none 22:00 50 32 17 188 (S) 1203 mstly clr none 23:00 50 32 19 197 (SSW) 1053 mstly clr none 00:00 49 32 20 193 (SSW) 881 mstly clr none 01:00 49 31 20 195 (SSW) 777 mstly clr none 02:00 49 31 26 196 (SSW) 730 mstly cldy none 03:00 49 31 22 206 (SSW) 685 cloudy none 04:00 49 31 19 194 (SSW) 762 cloudy none 05:00 48 30 16 203 (SSW) 757 cloudy none 06:00 47 28 22 221 (SW) 840 mstly 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 particles > 1u per 0.1 cubic feet. ---------- TELESCOPE SOFTWARE ---------- Current TCC version: 1.4.2 Current HUB version: v20171231_01 Current TUI version: 2.6.0