Apache Point Observatory 3.5m Telescope Night Log Sunday, March 08, 2026 PROG PI ASTRONOMER OBSERVER(S) -------------------------------------------------------------------- JH05 N.Zakamska D.Bizyaev OU03 K.Leighly G.Garcia ON-SKY PROG INSTRUMENT START FINISH -------------------------------------------------------------------- JH05 ECHELLE 19:15 01:09 OU03 NICFPS 01:16 06:20 PROG SCHEDULED WEATH EQUIP OBS NOT USED I/ROW/DTN START FINISH D B D B D B D B ----------------------------------------------------------------- JH05/R 19:15 01:10 0 0 0 0 5.2 0.7 0 0 OU03/R 01:10 07:13 0 0 0 0 0.0 6.1 0 0 note: scheduled times listed include instrument change time ------------- ACTIVITY LOG -------------- Observing Specialist: J.Dembicky Motion error going down @68.8 deg alt. This was after 2 tcc slews. I did have a delay between slews but that should not be an issue. Failed to connect to NA2 rotator during the instrument switch at 01:10. I reset the NA2 drive controller to fix. 2026-03-09 07:10:17 APO.Jack-ObsA 193 tcc f text="Failed to change to rotator 1: AxisDevice(rot1) failed to connect: Sub-command(s) failed: INIT: Timed out; STATUS: Timed out" I power cycled the 3.5m barameter to reset around midnight. No other telescope issues. ------- 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 -------------------------------------------------------------------------- 19:42 ecamera 450( -44) 7 57 6.6 8.6 8.2 8.3 6.8 Clear 1.77 01:22 NICFPS 552( 1336) -26 59 6.9 6.0 6.6 5.9 6.5 MK-J 0.69 01:24 NA2gdr 49993(49993) -27 59 6.9 6.0 6.6 5.9 6.5 clear 1.11 ------------- WEATHER LOG ---------------- Wind Precip.or Time Temp F Dewp F MPH Direction Dust Sky Conditions ------------------------------------------------------------------ 16:00 52 25 14 215 (SW) 686 clear none 17:00 51 26 11 263 (W) 858 clear none 18:00 48 25 7 262 (W) 811 clear none 19:00 46 24 5 242 (WSW) 860 clear none 20:00 44 24 4 249 (WSW) 910 clear none 21:00 44 25 7 236 (SW) 812 clear none 22:00 44 25 8 234 (SW) 889 clear none 23:00 45 23 10 226 (SW) 1114 clear none 00:00 45 22 12 211 (SSW) 1189 clear none 01:00 44 22 10 235 (SW) 1175 clear none 02:00 44 24 15 255 (WSW) 1589 clear none 03:00 44 25 15 239 (WSW) 1652 clear none 04:00 44 29 11 260 (W) 2066 clear none 05:00 44 31 11 260 (W) 2415 clear none 06:00 43 32 12 267 (W) 2796 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