Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, January 07, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
EN01  B.Ketzeback       J.Dembicky                                                          

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN01  X              --:--   --:--                                

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN01/O/W   17:22  06:58   4.7  8.9   0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

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

Zero'ed rotator -0.0450

Started snow program about 19:30

Focused ecamera slitviewer.

Wrote up procedure for focusing ecam slitviewer in wiki

Took new ecam mask and implemented.

Updated proceedure on wiki for taking ecam masks. Some time/filters were a little off and cleaned up text.

We never opened tonight due to weather.  I turned the snow program off at 05:00 and went to bed.  We had about 1/4 inch of snow on the ground with ice underneath at site.

                    ------- FAILURE LOG -------

              FAILURE MODE     TIME
PROG   INSTR     TI/SHU    START  FINISH  DESCRIPTION
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            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    39    25     25   204  (SSW)    195   cloudy   lt rain
     17:00    36    28     19   227   (SW)          cloudy   lt snow
     18:00    33    28     15   244  (WSW)          cloudy   lt snow
     19:00    30    30     19   215   (SW)          cloudy   lt snow
     20:00    33    32     34   194  (SSW)          cloudy   lt snow
     21:00    32    32     27   216   (SW)          cloudy   lt snow
     22:00    31    32     29   233   (SW)          cloudy   lt snow
     23:00    31    31     28   214   (SW)          cloudy   lt snow
     00:00    31    31     40   237  (WSW)          cloudy   lt snow
     01:00    30    31     25   236   (SW)          cloudy   lt snow
     02:00    28    28     19   244  (WSW)          cloudy     fog  
     03:00    27    27     21   268    (W)          cloudy     fog  
     04:00    27    28     26   295  (WNW)          cloudy     fog  
     05:00    27    28     11   269    (W)          cloudy     fog  

     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