Subject: 3.5m Night Log 20251204
From: tsutherland@apo.nmsu.edu
Date: Fri,  5 Dec 2025 12:23:15 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, December 04, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW02  P.Yoachim         Z.Xu,Z,Liu
JH02  M.MacGregor       M.MacGregor,G.TovarMendoza,C.Ingebertson
JH04  R.Vervack         A.McKay
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW02  KOSMOS         18:25   20:45
JH02  NICFPS         22:00   23:34
JH04  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW02/R      17:06  21:10    0    1.8    0    0   0.0  2.3   0   0
JH02/R      21:10  00:10    0    1.4    0    0   0.0  1.6   0   0
JH04/R      00:10  06:42    0    6.5    0    0   0.0  0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
Started venting at 17:15 to get the mirror to cool down.
Opened around 18:20. Closed at 20:45 for wind.
Opened at 22:00 and closed again for wind and humidity at 23:34. Never reopened due to wind and clouds. Gave up at 04:30.
Focus REALLY low at start of night. Which is odd, since it has been high lately.
Kosmos slits that need it have been taped on the back.
All sky camera webpage was not working all night. It was taking images in the VNC viewer though.
Dome parked facing south to melt remaining snow/ice.
                    ------- 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
--------------------------------------------------------------------------
 18:45 kosmos    50(   93)  -7  52  -4.0 -1.3 -1.8 -2.3 -3.7   --  1.06
 22:17 NICFPS     541(  868)  49  38  -3.7 -4.0 -3.3 -4.1 -3.8   MK-H  1.13
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    30    11      9   324   (NW)    220    clear     none
     17:00    26    14     10   319   (NW)    239    clear     none
     18:00    25    13     11   302  (WNW)    163 mstly clr    none
     19:00    25    12     11   326   (NW)    141 mstly clr    none
     20:00    26    12     12   294  (WNW)    147    clear     none
     21:00    26    17     18   306   (NW)           clear     none
     22:00    26    19      6   277    (W)           clear    humid
     23:00    26    20     16   307   (NW)           clear    humid
     00:00    26    20     13   301  (WNW)           clear    humid
     01:00    26    19     19   323   (NW)           clear     none
     02:00    26    20     12   304   (NW)           clear     none
     03:00    27    12     16   300  (WNW)    207  ptly cldy   none
     04:00    28    14     22   296  (WNW)    412 mstly cldy   none
     05:00    27    14     15   295  (WNW)    447  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: 3.1.8