Subject: 3.5m Night Log 20201217 From: trudyk@apo.nmsu.edu Date: Fri, 18 Dec 2020 13:42:00 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Thursday, December 17, 2020 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- CU07 J.Bally J.Bally UW04 P.Yoachim P.Yoachim ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- CU07 ARCTIC 17:08 21:50 CU07 ECHELLE 21:55 00:04 UW04 ARCTIC 00:08 04:30 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- CU07/R 17:08 00:10 0 0 0 0 3.8 3.2 0 0 UW04/R 00:10 06:52 2.4 0 0 0 4.3 0.0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Rudyk Evening started with a large cloud system moving in. No rain on radar, so we opened at sunset. Clouds continued to thicken. Seeing was decent. By 22:00 John could no longer image nebula so we switched to echelle to do brighter stars. Clouds kept getting thicker during B half. It became overcast and observer gave up around 04:30. ------- 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 -------------------------------------------------------------------------- 17:46 arctic 506( 561) 112 61 0.2 2.2 2.8 2.2 0.4 SDSS_i 1.24 17:48 arctic 463( 515) 112 61 0.2 2.2 2.7 2.1 0.4 UNM659/3 1.03 17:50 arctic 441( 492) 112 62 0.2 2.1 2.6 2.2 0.4 CU_Sii 0.95 17:55 arctic 470( 512) 112 63 0.3 2.0 2.5 1.8 0.3 UNM657/3 1.11 20:45 arctic 511( 449) 179 61 0.1 -0.3 0.3 -0.3 -0.2 SDSS_i 1.03 21:52 ecamera 471( -701) 148 64 0.1 -0.4 0.1 -0.5 -0.2 ND1 1.10 00:10 ecamera 488( -651) -8 52 0.6 0.1 0.6 0.4 0.6 ND1 1.05 00:16 arctic 546( 506) -1 57 0.7 0.2 0.6 0.4 0.6 SDSS_r 0.87 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 37 6 19 221 (SW) 82 mstly clr none 17:00 34 5 17 202 (SSW) 78 mstly clr none 18:00 33 4 18 200 (SSW) 56 mstly clr none 19:00 32 5 16 219 (SW) 207 ptly cldy none 20:00 32 4 17 212 (SSW) 483 ptly cldy none 21:00 32 4 17 215 (SW) 579 ptly cldy none 22:00 32 6 17 234 (SW) 699 ptly cldy none 23:00 33 6 18 203 (SSW) 836 ptly cldy none 00:00 33 6 23 207 (SSW) 845 ptly cldy none 01:00 33 5 22 209 (SSW) 937 ptly cldy none 02:00 33 5 21 204 (SSW) 1275 mstly cldy none 03:00 33 7 15 216 (SW) 1200 cloudy none 04:00 34 8 15 246 (WSW) 520 cloudy none 05:00 33 8 12 265 (W) 638 mstly cldy none 06:00 32 12 21 280 (W) 586 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: 2.6.0