Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, February 06, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WY03  C.Kobulnicky      N.Patten              
CU02  Z.Berta-Thompson  Z.Berta-Thompson,P.Wachiraphan

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY03  ECHELLE        17:49   23:53   
CU02  KOSMOS         23:57   05:33

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY03/R      17:49  00:10    0    0    0    0   4.9  1.5   0    0
CU02/R      00:10  06:45    0    1.2   0    0   0.0  5.4   0    0

note: scheduled times listed include instrument change time

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

Restarted gcam nubs at checkout.

Opened the dome to start venting at 16:45.

Restarted dataq after we went on sky in A-half.

Kosmos exposure failed out of the blue at around 1am. had to restart kosmos icc which worked. Couldn't reset the heater servo deadband though, see PR2276. Kosmos ccd temps have been ranging from 156-173K tonight.

Gave up at 5:30am due to pesky clouds. 

                    ------- 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
--------------------------------------------------------------------------
 18:15 ecamera    374( -145) -21  70   6.4  7.9  7.6  7.5  6.2   ND1  1.08
 22:23 ecamera    461( -171) 322  52   6.4  5.6  6.1  5.6  6.1   ND3  0.67
 00:15 kosmos   561(  902)  92  41   5.1  4.8  5.5  4.7  4.8   --  1.19

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    48    21     10   244  (WSW)    358    clear     none 
     17:00    47    24      7   242  (WSW)    559    clear     none 
     18:00    43    22      6   210  (SSW)    332    clear     none 
     19:00    43    21      9   215   (SW)    229    clear     none 
     20:00    43    18      8   229   (SW)    237    clear     none 
     21:00    43    14     11   235   (SW)    216    clear     none 
     22:00    44    15     14   231   (SW)    218    clear     none 
     23:00    43    15     14   242  (WSW)    255    clear     none 
     00:00    42    16     12   232   (SW)    244    clear     none 
     01:00    40    22     16   229   (SW)    382    clear     none 
     02:00    40    21     13   247  (WSW)    511    clear     none 
     03:00    41    22     14   246  (WSW)    746 mstly clr    none 
     04:00    41    20     11   266    (W)    602 mstly clr    none 
     05:00    41    19      9   267    (W)    774  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