Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, December 20, 2025

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
NM05  K.Sanderson       K.Sanderson           
UW04  S.Hawley          S.Hawley, L.Hebb 

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM05  KOSMOS         17:10   00:02   
UW04  ECHELLE        00:03   06:20

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM05/R      17:10  00:10    0    0    0    0   6.6  0.4   0    0
UW04/R      00:10  06:53    0    0    0    0   6.7  0.0   0    0

note: scheduled times listed include instrument change time

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

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
--------------------------------------------------------------------------
 18:39 kosmos   400(  952) 265  55   8.3  9.5  9.4  9.4  8.2   --  0.99
 00:08 ecamera    430( -126)  34  52   8.2  7.2  7.9  6.9  7.9   ND1  0.99

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    50    16     11   290  (WNW)    156 mstly clr    none 
     17:00    47    15      8   260    (W)    151 mstly clr    none 
     18:00    46    18     11   245  (WSW)    618 mstly clr    none 
     19:00    47    17     13   239  (WSW)    501 mstly clr    none 
     20:00    46    17      9   219   (SW)    603 mstly clr    none 
     21:00    47    16      7   248  (WSW)    425    clear     none 
     22:00    48    17      7   254  (WSW)    277    clear     none 
     23:00    45    19      1   226   (SW)    219    clear     none 
     00:00    47    18      3   285  (WNW)    213    clear     none 
     01:00    47    18      6   358    (N)    283    clear     none 
     02:00    45    19     10    25  (NNE)    212    clear     none 
     03:00    49    19     14   300  (WNW)    196    clear     none 
     04:00    45    23     12   330  (NNW)    138    clear     none 
     05:00    45    24     10   312   (NW)    110    clear     none 
     06:00    44    22     11   348  (NNW)     81    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