Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, January 04, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW06  C.Chandler        M.Frissell            
NM06  W.Roberson        A.Smith,A.Peck        

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW06  ARCTIC         20:35   00:01   
NM06  ECHELLE        00:06   06:53

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW06/R      17:19  00:10   1.4   1.8    0    0   0   3.6   0    0
NM06/R      00:10  06:58    0    0    0    0   0.0  6.8   0    0

note: scheduled times listed include instrument change time

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

Super cloudy to start the night. It cleared up enough to open around 20:30, and stayed kinda cloudy the rest of the night.

Arctic finished cooling at 17:20 and quads are balanced around 280.
Thank you Cary for getting Arctic back up and running! 

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
--------------------------------------------------------------------------
 20:42 arctic   500(  939) -40  63   5.9  5.2  6.5  5.0  5.4   SDSS_r  0.91
 22:57 arctic   546(  976) -77  38   4.4  4.5  5.3  4.5  4.5   SDSS_r  1.12
 00:10 ecamera    534( -164) -88  44   4.5  4.1  4.6  4.0  4.4   ND2  1.12
 01:38 ecamera    507( -188) -16  39   5.1  4.0  4.7  4.2  4.4   ND1  1.28

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    42    21      5   277    (W)    341   cloudy     none 
     17:00    41    21      7   265    (W)    254   cloudy     none 
     18:00    39    26      7   204  (SSW)    259   cloudy     none 
     19:00    38    30      6   209  (SSW)        mstly cldy   none 
     20:00    41    24      8   271    (W)         ptly cldy   none 
     21:00    43    16     12   264    (W)    287  ptly cldy   none 
     22:00    43    12     12   264    (W)    311  ptly cldy   none 
     23:00    40    13     10   252  (WSW)    323  ptly cldy   none 
     00:00    40    16     11   261    (W)    282  ptly cldy   none 
     01:00    41    11     12   283  (WNW)    326  ptly cldy   none 
     02:00    41     9     21   298  (WNW)    241  ptly cldy   none 
     03:00    40     7     14   299  (WNW)    202  ptly cldy   none 
     04:00    41    -3     20   292  (WNW)    115  ptly cldy   none 
     05:00    41    -5     13   278    (W)    104  ptly cldy   none 
     06:00    40    -4     21   272    (W)    123  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