Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, February 08, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW05  B.Benda           B.Benda               
UW02  P.Yoachim         D.Meng, Z.Xu          
AP02  S.Merkowitz       R.McMillan, T.Sutherland

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW05  ECHELLE        17:51   00:08   
UW02  KOSMOS         00:10   03:22
AP02  APOLLO         03:25   06:20

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW05/R      17:51  00:10    0    0    0    0   6.3  0.0   0    0
UW02/R      00:10  03:27    0    0    0    0   0.5  2.8   0    0
AP02/R      03:27  06:43    0    0    0    0   0.0  3.3   0    0

note: scheduled times listed include instrument change time

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

I set the KOSMOS heater deadband to 3.  Torrie had an issue the other night but it seemed to work fine for me.  It was still set to 5 and is now at 3.

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
--------------------------------------------------------------------------
 18:43 ecamera    506( -124) 153  66   5.9  5.8  5.9  5.3  5.7   ND2  1.03
 00:20 kosmos   456(  784) 133  73   5.4  4.9  5.5  5.0  5.1   --  1.29
 03:29 APOLLO     475( 1542)  48  34   4.4  3.5  4.2  3.4  3.8   --  1.60

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    42    24      9   352    (N)    860 mstly clr    none 
     17:00    43    20      5   357    (N)    733    clear     none 
     18:00    43     9     14    23  (NNE)    439    clear     none 
     19:00    42    -5     11    12  (NNE)    189    clear     none 
     20:00    42    -3     19    24  (NNE)    264    clear     none 
     21:00    42     4     18    21  (NNE)    386    clear     none 
     22:00    42     9     21    19  (NNE)    494    clear     none 
     23:00    42     8     17    13  (NNE)    437    clear     none 
     00:00    43     6     15    11    (N)    446    clear     none 
     01:00    41     7     16    20  (NNE)    444    clear     none 
     02:00    40    10     12    52   (NE)    531    clear     none 
     03:00    40    11      4    52   (NE)    539    clear     none 
     04:00    39    12     11    33  (NNE)    631    clear     none 
     05:00    38    10      9   356    (N)    563    clear     none 
     06:00    39    10      8    19  (NNE)    512    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