Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, December 15, 2025

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
OU04  G.Garcia          G.Garcia              
OU03  G.Jewett          G.Jewett              

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU04  NICFPS         17:25   23:55   
OU03  ARCTIC         00:10   06:35

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU04/R      17:08  00:10    0.2    0    0    0   6.8  0.0   0   0
OU03/R      00:10  06:50    0    0    0    0   3.8  2.8   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland

Stayed closed for cals and clouds, but clouds thinned out by the time we were ready to get on sky. 

Perfect weather for most of the night with great seeing.

The red knob fell off of one of the screws for NICFP's metal light blocking cover. Red knob is on the cart.

No telescope or instrument 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
--------------------------------------------------------------------------
 17:36 NICFPS     599( 1451)  58  72   5.6  7.6  8.0  7.6  6.1   MK-J  0.73
 17:43 NA2gdr 45758(45758)  54  73   5.6  7.4  7.7  7.3  5.8   clear  1.93
 18:46 NICFPS     496( 1299)  40  79   6.4  6.6  6.9  6.3  6.2   MK-J  0.69
 00:17 arctic   467(  917)  47  35   4.9  4.9  5.6  4.8  5.1   BG40  1.14
 02:21 arctic   449(  874)  34  31   5.3  4.3  5.1  4.3  4.9   BG40  1.13

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    46    18      7   290  (WNW)   1078 mstly cldy   none 
     17:00    44    19      7   268    (W)   1211  ptly cldy   none 
     18:00    43    18     11   295  (WNW)   1152  ptly cldy   none 
     19:00    44    19      8   298  (WNW)   1049 mstly clr    none 
     20:00    45    19     13   304   (NW)   1079 mstly clr    none 
     21:00    44    18      6   259    (W)   1198    clear     none 
     22:00    43    19      9   265    (W)   1191    clear     none 
     23:00    43    19      8   260    (W)   1191    clear     none 
     00:00    42    20     10   265    (W)   1125    clear     none 
     01:00    41    20      9   268    (W)   1118    clear     none 
     02:00    42    20     13   283  (WNW)   1183    clear     none 
     03:00    41    20     12   298  (WNW)   1351    clear     none 
     04:00    41    18     17   319   (NW)    996    clear     none 
     05:00    41    18     12   306   (NW)   1097    clear     none 
     06:00    40    14     13   333  (NNW)    598    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