Apache Point Observatory 3.5m Telescope Night Log Sunday, August 23, 2026 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- NM07 E.Serviss E.Serviss, E.Nielsen WY01 M.Moe S.Dandu ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- NM07 ECHELLE 19:47 01:05 WY01 KOSMOS 01:10 05:45 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- NM07/R 19:47 01:10 0 0 0 0 0.0 5.4 0 0 WY01/R 01:10 06:24 0 0 0 0 3.3 1.9 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky Echelle Blue IOL reduced properly, red IOL did not. I re-took the red image. IOL reduced properly at end of the night. No telescope issues. Clear night all night except for the very end when clouds rolled in. ------- 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 -------------------------------------------------------------------------- 20:20 ecamera 457( 556) 184 63 19.9 21.2 21.2 20.6 19.6 Clear 0.96 01:18 kosmos 382( 1325) -64 82 18.5 18.1 18.8 18.2 17.9 -- 0.80 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 73 34 15 184 (S) 1671 clear none 17:00 73 35 1 247 (WSW) 1579 clear none 18:00 73 33 14 185 (S) 1352 clear none 19:00 72 35 9 201 (SSW) 1620 clear none 20:00 68 32 12 168 (SSE) 1807 clear none 21:00 67 32 13 155 (SSE) 2178 clear none 22:00 66 33 11 178 (S) 2382 clear none 23:00 67 33 11 172 (S) 2532 clear none 00:00 66 33 11 180 (S) 2758 clear none 01:00 66 34 17 152 (SSE) 2562 clear none 02:00 64 34 9 174 (S) 2603 clear none 03:00 65 32 12 183 (S) 2593 clear none 04:00 65 30 10 189 (S) 2113 clear none 05:00 64 31 12 205 (SSW) 2485 ptly cldy none 06:00 63 32 7 187 (S) 2591 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: 3.2.2