Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, January 21, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
AP01  S.Merkowitz       R.McMillan,T.Sutherland
GS02  D.Gies            A.Chaturvedi,R.Klement,C.Gray
UW05  B.Benda           B.Benda               

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AP01  APOLLO         --:--   --:--   
GS02  ECHELLE        18:45   00:18
UW05  ECHELLE        00:24   06:08

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
AP01/R      17:34  18:34    0    1    0    0   0.0   0   0    0
GS02/R      18:34  00:10    0    0.2   0    0   3.6  1.8   0    0
UW05/R      00:10  06:55    0    0    0    0   6.8  0.0   0    0

note: scheduled times listed include instrument change time

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

Restarted gcam nubs at checkout.

Lots and lots of clouds tonight. Thankfully most of the night was echelle, so we were able to punch through them more or less. It was too cloudy to do apollo. 

No telescope or instrument problems tonight. Just annoying clouds.

                    ------- 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
--------------------------------------------------------------------------
 19:03 ecamera    314( -374) 112  53   3.4  4.4  4.1  4.0  3.0   ND2  0.82
 21:44 ecamera    445( -300)  -4  51   4.1  3.2  3.8  2.9  3.6   ND3  0.76
 00:27 ecamera    456( -379)   7  60   2.0  1.4  2.7  1.9  2.0   ND2  1.95


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    40     8      6   218   (SW)    741  ptly cldy   none 
     17:00    37    -1      2   236   (SW)    275 mstly cldy   none 
     18:00    35   -13      5   191    (S)    289 mstly cldy   none 
     19:00    38   -13      4   232   (SW)    101 mstly cldy   none 
     20:00    41   -11      4   254  (WSW)     81 mstly cldy   none 
     21:00    39   -12      2   198  (SSW)     93 mstly cldy   none 
     22:00    40   -11      7   264    (W)     69 mstly cldy   none 
     23:00    37   -12      7   277    (W)    158   cloudy     none 
     00:00    36    -2      7   296  (WNW)    421   cloudy     none 
     01:00    36     6      5   305   (NW)    638   cloudy     none 
     02:00    36    10      7   266    (W)    864   cloudy     none 
     03:00    36    11     11   266    (W)    973  ptly cldy   none 
     04:00    36    13     18   294  (WNW)   1175  ptly cldy   none 
     05:00    36    14     23   286  (WNW)   1162  ptly cldy   none 
     06:00    36    16     18   284  (WNW)   1233  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