Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, January 15, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
CU06  J.Bally           J.Bally               
NM03  T.McQuaid         T.McQuaid             

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU06  KOSMOS         05:29   09:39   
CU06  ARCTIC         09:51   00:05   
NM03  ECHELLE        00:08   6:03

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU06/R      17:29  00:10    0    0    0    0   6.7  0.0   0    0
NM03/R      00:10  06:57    0    0    0    0   5.5  1.3   0    0

note: scheduled times listed include instrument change time

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

Uneventful night, good weather throughout. 

Swapped to ARCTIC at 9:39, then to the echelle at 00:05.

                    ------- 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
--------------------------------------------------------------------------
 18:04 kosmos   568(  926)  73  24   4.6  4.8  5.0  4.4  4.4   --  0.95
 22:00 arctic   466(  738)  -2  70   3.1  1.6  3.0  2.3  2.8   H-alpha  1.05
 22:02 NA2gdr 35032(35032)  -3  70   3.0  1.6  3.0  2.3  2.8   --  1.38
 00:26 ecamera    547( -296) -137  78   2.5  1.4  2.7  2.2  2.4   --  0.84

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    39    14     16   327  (NNW)     77    clear     none 
     17:00    40    14     18   318   (NW)    107    clear     none 
     18:00    41    13      4    79    (E)     96    clear     none 
     19:00    41    14     10   327  (NNW)     99    clear     none 
     20:00    39    15      2   293  (WNW)    136    clear     none 
     21:00    38    16      7   334  (NNW)    184    clear     none 
     22:00    38    17     12   335  (NNW)    197    clear     none 
     23:00    37    18     11   359    (N)    347    clear     none 
     00:00    37    18     13     3    (N)    381    clear     none 
     01:00    36    19      9     1    (N)    314    clear     none 
     02:00    37    14     24    20  (NNE)    182    clear     none 
     03:00    34    14     19    10    (N)    151    clear     none 
     04:00    36     9     23    27  (NNE)    156    clear     none 
     05:00    39     3     20    20  (NNE)     85    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