Subject: 3.5m Night Log 20210529 From: mcmillan@apo.nmsu.edu Date: Sun, 30 May 2021 12:13:53 +0000 (UTC) Apache Point Observatory 3.5m Telescope Night Log Saturday, May 29, 2021 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- JH08 N.DelloRusso A.McKay,students GS03 D.Gies K.Shepard AP01 S.Merkowitz R.McMillan ACTUAL PROG INSTRUMENT START FINISH -------------------------------------------------------------------- JH08 ECHELLE 20:43 01:11 GS03 ECHELLE 01:11 04:47 AP01 APOLLO 04:50 05:37 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- JH08/R 20:14 01:10 0.5 0 0 0 3.5 1.3 0 0 GS03/R 01:10 04:48 0 0 0 0 0.0 3.6 0 0 AP01/R 04:48 05:48 0 0.2 0 0 0.0 0.8 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: R.McMillan First half had cumulus with nearby rain at sunset, but we were able to open not too long after. High clouds persisted for a while but gradually improved, and second half was mostly clear. An east wind meant mediocre to poor seeing, but it wasn't as bad as it could have been. During APOLLO, more clouds showed up and mostly prevented data-taking, so I closed 10 minutes early. There were two motion errors, one which occurred at 72 deg alt when I was moving down after the observer had accidentally tracked into the 85 degree limit, and one at 67 deg when I was moving from alt 80 for tertiary rotation to alt 10 for parking. ------- 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 -------------------------------------------------------------------------- 01:48 ecamera 319 1.48 21:36 ecamera 362( -38) -77 63 13.5 15.9 16.7 15.4 14.0 ND2 1.91 01:18 ecamera 447( -106) -91 51 13.0 12.6 13.3 12.4 12.6 ND2 1.51 04:53 APOLLO 550( 1728) 26 37 11.8 11.9 12.4 11.8 11.9 530 1.80 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 72 29 17 237 (WSW) ptly cldy none 17:00 72 28 18 240 (WSW) ptly cldy none 18:00 72 25 14 219 (SW) ptly cldy none 19:00 66 22 20 225 (SW) ptly cldy none 20:00 62 38 4 205 (SSW) 1672 ptly cldy none 21:00 58 35 19 132 (SE) ptly cldy none 22:00 56 27 20 129 (SE) ptly cldy none 23:00 56 32 23 133 (SE) mstly clr none 00:00 56 32 15 120 (ESE) clear none 01:00 56 32 20 128 (SE) mstly clr none 02:00 55 31 17 150 (SSE) clear none 03:00 55 31 17 151 (SSE) clear none 04:00 54 31 19 136 (SE) clear none 05:00 53 31 15 152 (SSE) mstly clr none 06:00 52 32 15 126 (SE) ptly 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