Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, January 14, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WY01  M.Brotherton      M.Brotherton          
JH05  N.Zakamska        D.Bizyaev             
NM07  K.Sanderson       K.Sanderson           

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  KOSMOS         17:28   20:03   
JH05  ECHELLE        20:06   00:08
NM07  KOSMOS         00:11   05:55

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R      17:28  20:08    0    0    0    0   2.7  0.0   0    0
JH05/R      20:08  00:10    0    0    0    0   4.0  0.0   0    0
NM07/R      00:10  06:57    0    0    0    0   4.6  2.2   0    0

note: scheduled times listed include instrument change time

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

Uneventful night, very good weather throughout. 

Echelle's ThAr lamp was very weak at the start but some percussive maintenance on the power supply fixed it.

                    ------- 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
--------------------------------------------------------------------------
 18:13 klow   365(  657) 135  49   2.0  3.8  3.3  3.2  2.1   gg455  0.88
 20:15 ecamera    468( -362) -167  40   2.2  1.2  2.0  1.6  2.1   --  1.39
 00:23 kosmos   518(  679) -33  46   2.5  1.1  2.4  1.6  2.3   --  1.06

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    38    21      3   194  (SSW)    444    clear     none 
     17:00    35    20      2   235   (SW)    448    clear     none 
     18:00    35    19      1   228   (SW)    426    clear     none 
     19:00    34    18     11    36   (NE)    335    clear     none 
     20:00    35    16      1    88    (E)    161    clear     none 
     21:00    35    15      1   329  (NNW)    186    clear     none 
     22:00    35    17      8   354    (N)    239    clear     none 
     23:00    38    14     11    27  (NNE)    127    clear     none 
     00:00    37    14     11    43   (NE)    105    clear     none 
     01:00    35    15      1   212  (SSW)    131    clear     none 
     02:00    35    16     13    28  (NNE)    122    clear     none 
     03:00    36    16     11    27  (NNE)    119    clear     none 
     04:00    34    15      1   195  (SSW)    124    clear     none 
     05:00    32    16      6   347  (NNW)    202    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