Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, January 27, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WY01  M.Brotherton      M.Brotherton          
NM05  A.Peck            E.Nielsen             
NM05  A.Peck            E.Nielsen             

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  KOSMOS         --:--   --:--   
NM05  ECHELLE        --:--   --:--
NM05  ECHELLE        --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R      17:40  20:20    0   2.7   0    0   0.0  0.0  0    0
NM05/R      20:20  00:10    0   3.8   0    0   0.0  0.0   0    0
NM05/R      00:10  06:52   3.6  3.1   0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan

Snow on the dome and no utility power kept us closed again tonight.  There was also some blowing snow in the area which would have been a concern even if the other factors had been better.

I left the telescope facing east since the cameras showed the right side of the dome still has more snow than the left.  I did morning fills and exercised the APOLLO systems to warm and check them.  

                    ------- 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    32     1     16    10    (N)   1101    clear     none 
     17:00    31    -4     16    14  (NNE)   2318    clear     none 
     18:00    31   -11     22   356    (N)    467    clear     none 
     19:00    32   -13     24   351    (N)    480    clear     none 
     20:00    29   -12     21    18  (NNE)    390    clear     none 
     21:00    30   -11     14   354    (N)    414    clear     none 
     22:00    30    -8     17     9    (N)    461    clear     none 
     23:00    32    -6      8    23  (NNE)    469 mstly clr    none 
     00:00    31    -4      8   342  (NNW)    516 mstly clr    none 
     01:00    32    -5     18    24  (NNE)    526 mstly clr    none 
     02:00    32     0      7    12  (NNE)    442  ptly cldy   none 
     03:00    32    -2     10     7    (N)    432  ptly cldy   none 
     04:00    32    -3     14     6    (N)    424  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