Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, December 27, 2025

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
NM04  A.Peck            A.Abbas               
CU03  Z.Berta-Thompson  Z.Berta-Thompson      

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM04  ECHELLE        --:--   --:--   
CU03  KOSMOS         --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM04/R      17:14  00:10    0   6.9   0    0   0.0  0.0   0    0
CU03/R      00:10  06:56   6.2  0.6   0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

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

We had rain in the afternoon and heavy fog during second half.  For a short period during first half I allllmost felt it might be safe to open, but unstable humidity made me nervous, and then the clouds closed in again.

                    ------- 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    38    38     22   266    (W)          cloudy     fog  
     17:00    37    35     20   264    (W)          cloudy    humid 
     18:00    37    32     17   267    (W)          cloudy    humid 
     19:00    38    32     20   270    (W)        mstly cldy   none 
     20:00    37    32     16   275    (W)         ptly cldy   none 
     21:00    37    32     16   282  (WNW)         ptly cldy   none 
     22:00    37    32     20   261    (W)        mstly cldy  humid 
     23:00    37    32     25   266    (W)          cloudy    humid 
     00:00    37    32     20   267    (W)          cloudy     fog  
     01:00    37    32     18   264    (W)          cloudy     fog  
     02:00    37    31     20   259    (W)          cloudy     fog  
     03:00    37    32     23   264    (W)          cloudy     fog  
     04:00    37    32     18   280    (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