Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, October 05, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW10  P.Szkody          P.Szkody              
OU01  M.Kilic           G.Jewett              

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW10  KOSMOS         --      --      
OU01  ARCTIC         --      --

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW10/R      18:51  01:10   6.3   0    0    0   0.0  0.0   0    0
OU01/R      01:10  06:53   1.6  4.1   0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

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

Echelle bias level was around 2000 counts instead of ~1200 at checkout, echelle status showed ccdTemps=42.9,-18. Russet and Cary were notified, and I closed the CCD reservoir valve on the nurse tank.

Cloud cover at the start of night and high humidity throughout the night kept us closed.


                    ------- 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
--------------------------------------------------------------------------

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    51    45      4   222   (SW)          cloudy     none 
     17:00    50    44      3   223   (SW)          cloudy     none 
     18:00    50    44      6   219   (SW)          cloudy    humid 
     19:00    48    44      7   232   (SW)          cloudy    humid 
     20:00    48    44      5   138   (SE)          cloudy    humid 
     21:00    47    45      2   142   (SE)         ptly cldy  humid 
     22:00    46    45      1   170    (S)           clear    humid 
     23:00    48    43      2   267    (W)           clear    humid 
     00:00    47    43      3   271    (W)           clear    humid 
     01:00    47    42      3   307   (NW)           clear    humid 
     02:00    46    43      2   308   (NW)           clear    humid 
     03:00    46    43      3   300  (WNW)           clear    humid 
     04:00    45    43      3   339  (NNW)           clear    humid 
     05:00    45    40      5   347  (NNW)           clear    humid 

     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: