Subject: 3.5m Night Log 20201012 From: trudyk@apo.nmsu.edu Date: Tue, 13 Oct 2020 12:54:55 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Monday, October 12, 2020 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- WY01 C.Kobulnicky C.Kobulnicky NM01 D.DeColibus D.DeColibus ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- WY01 ECHELLE 18:45 22:30 WY01 ECHELLE 23:11 01:04 NM01 TSPEC 01:08 06:30 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- WY01/R 18:42 01:10 0.7 0 0 0 5.8 0.0 0 0 NM01/R 01:10 06:58 0 0 0 0 2.1 3.7 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Rudyk Evening started clear and calm with decent seeing. Around 21:45 dust levels began to spike despite the low wind: bit of a mystery. It was real, though: El Paso was no longer visible, HAFB was very hazy. Precautions were taken. Nonetheless, dust levels kept slowly rising, and we were forced to close by 22:30. Sure enough, dust began to drop off after that. We opened again at 23:11. Dust stayed in the yellow for a few hours, then went red again after 02:00. It was barely over limits, so we stayed open albeit with the fans in dust configuration. Windaq front-end froze around 02:40. Around 03:00 dust levels fell to safe/yellow levels again. We stayed open until dawn. ------- 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 -------------------------------------------------------------------------- 19:05 ecamera 357( -115) 122 62 12.1 14.4 14.3 13.6 12.3 ND4 0.98 20:31 ecamera 409( -155) -1 64 12.0 12.5 12.9 12.3 11.9 ND1 1.11 21:51 ecamera 381( -50) -131 59 11.9 11.5 12.1 11.1 11.3 clear 1.10 23:22 ecamera 436( -188) -152 83 12.4 11.4 11.9 11.2 12.1 ND3 0.71 01:14 tcamera 440( 1148) -14 52 12.0 11.7 12.3 11.7 11.7 - 1.07 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 61 18 11 263 (W) 3681 clear none 17:00 60 20 11 260 (W) 2706 clear none 18:00 58 18 8 266 (W) 1659 clear none 19:00 54 18 6 254 (WSW) 3857 clear none 20:00 54 17 10 240 (WSW) 2986 clear none 21:00 53 18 8 216 (SW) 3812 clear none 22:00 54 18 6 200 (SSW) 5588 clear none 23:00 54 18 5 263 (W) 4620 clear none 00:00 55 18 9 279 (W) 3385 clear none 01:00 53 17 9 284 (WNW) 3563 clear none 02:00 53 18 7 273 (W) 5372 clear none 03:00 54 19 11 311 (NW) 4564 clear none 04:00 54 19 7 303 (WNW) 4077 clear none 05:00 53 19 10 305 (NW) 4250 clear none 06:00 53 19 10 324 (NW) 4752 clear 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: 1.2.4 Current HUB version: v20171231_01 Current TUI version: 2.6.0