Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, December 22, 2025

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
OU03  G.Jewett          G.Jewett              
GS01  M.Crenshaw        M.Shea                

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU03  ARCTIC         17:11   00:00   
GS01  KOSMOS         00:15   06:28

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU03/R      17:11  00:10    0    0    0    0   4.6  2.4   0    0
GS01/R      00:10  06:54    0    0    0    0   6.7  0.0   0    0

note: scheduled times listed include instrument change time

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

No problems tonight

                    ------- 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
--------------------------------------------------------------------------
 17:45 ARCTIC  421          28  55   9.1 10.7 10.5 10.2  9.2   BG40   1.09                  
 17:49 NA2gdr 37515(37515)  28  55   9.1 10.7 10.5 10.2  9.2   clear  1.20
 00:35 khigh   475( 1029) -58  40  10.5  9.3 10.4  9.4 10.0   --  1.00

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    53    17      9   263    (W)    169    clear     none 
     17:00    50    16      9   301  (WNW)    216    clear     none 
     18:00    49    13      8   309   (NW)    240    clear     none 
     19:00    50     8      9   306   (NW)    124    clear     none 
     20:00    50     5      4   258  (WSW)    196    clear     none 
     21:00    51    -1      6   261    (W)     83    clear     none 
     22:00    50     0      6   268    (W)     40    clear     none 
     23:00    51     1      4   258  (WSW)     26    clear     none 
     00:00    51     1      5   258  (WSW)     27    clear     none 
     01:00    52     2      2   241  (WSW)     32    clear     none 
     02:00    50     0      5   243  (WSW)     28    clear     none 
     03:00    50     1      5   249  (WSW)     39    clear     none 
     04:00    51     1      4   203  (SSW)     27    clear     none 
     05:00    51     1      2   236   (SW)     47    clear     none 
     06:00    49    -1      3   278    (W)     45    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