Apache Point Observatory 3.5m Telescope Night Log Saturday, January 10, 2026 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- CU06 J.Bally J.Bally WC01 A.Jaskot A.Jaskot ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- CU06 KOSMOS --:-- --:-- WC01 ECHELLE --:-- --:-- PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- CU06/R 17:24 00:10 6.8 0 0 0 0 0.0 0 0 WC01/R 00:10 06:58 0.8 6.1 0 0 0 0 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: T.Sutherland We did not open tonight due to the ice still present on the lightning rods and on the enclosure. We would have had a beautiful observing night too :( ------- 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 -------------------------------------------------------------------------- ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 28 18 3 196 (SSW) 325 clear none 17:00 25 15 1 210 (SSW) 213 clear none 18:00 23 11 0 254 (WSW) 231 clear none 19:00 25 6 6 18 (NNE) 197 clear none 20:00 25 2 4 71 (ENE) 319 clear none 21:00 25 0 11 69 (ENE) 117 clear none 22:00 25 -2 15 74 (ENE) 139 clear none 23:00 28 -5 1 75 (ENE) 100 clear none 00:00 27 -6 4 258 (WSW) 908 clear none 01:00 26 -7 3 275 (W) 522 clear none 02:00 26 -7 2 49 (NE) 162 clear none 03:00 25 -7 0 358 (N) 121 clear none 04:00 25 -8 5 273 (W) 160 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: 1.4.2 Current HUB version: v20171231_01 Current TUI version: 3.1.8