Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, September 30, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
CU05  A.Stephens        A.Stephens            
UW01  P.Yoachim         D.Meng, Z.Liu         
AP02  S.Merkowitz       R.McMillan            

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU05  KOSMOS         --:--   --:--   
UW01  KOSMOS         03:00   03:38
AP02  APOLLO         --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU05/R      18:57  01:10   2.4  3.9   0    0   0.0  0.0   0    0
UW01/R      01:10  04:00    0   2.2   0    0   0.0  0.6   0    0
AP02/R      04:00  06:49    0   2.8   0    0   0.0  2.8   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky

ARCTIC images looked completely normal tonight, including the LL quad!!!  Dome air temp around 9C.

Humidity started dropping around 02:00 and we were finally able to open at 03:00.

Humidity went back up and closed us at 03:40.  We never re-opened and I called the night at 05:40 due to high humidity.

                    ------- 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
--------------------------------------------------------------------------
 03:15 kosmos   254(  627) 140  59   6.0  5.8  8.3  5.6  5.7   --  1.30

               ------------- WEATHER LOG ----------------

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    41    41     14   265    (W)          cloudy    humid 
     17:00    43    40     17   269    (W)          cloudy    humid 
     18:00    43    42     19   291  (WNW)          cloudy    humid 
     19:00    43    42     15   265    (W)          cloudy    humid 
     20:00    42    42     13   276    (W)          cloudy    humid 
     21:00    42    42     12   283  (WNW)          cloudy    humid 
     22:00    42    40     12   321   (NW)           clear    humid 
     23:00    42    40     13   310   (NW)           clear    humid 
     00:00    43    40     11   319   (NW)           clear    humid 
     01:00    42    39      7   315   (NW)           clear    humid 
     02:00    42    39      2   307   (NW)         ptly cldy  humid 
     03:00    43    38      8     8    (N)           clear    humid 
     04:00    42    39     18    27  (NNE)           clear    humid 
     05:00    43    39     18    15  (NNE)           clear    humid 

     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: