Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, August 13, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
NM03  K.Sanderson       K.Sanderson           
OU03  Sameer            Sameer                

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM03  KOSMOS         23:55   01:10   
OU03  KOSMOS         01:11   05:15

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM03/R      19:59  01:10    3.3   0.6   0    0   1.2   0   0    0
OU03/R      01:10  06:18    0    0    0    0   5.1  0.0   0    0

note: scheduled times listed include instrument change time

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

Closed for clouds and radar at start of night. Opened just before midnight, and remained open with nice clear weather until OU03 called it quits for the night. 

No 3.5m telescope/instrument problems tonight.

A few Arcsat problems. See separate email. It did the thing where it got stuck at 12deg alt and wouldn't move again was the main thing.

                    ------- 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
--------------------------------------------------------------------------
 00:03 kosmos   415( 1288)  32  64  14.3 16.5 18.2 16.1 15.0   --  0.98
 01:32 kosmos   340( 1140)  31  48  15.0 14.7 15.7 14.4 14.4   --  0.85

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    72    51     15   218   (SW)    983 mstly cldy   none 
     17:00    66    50     19   219   (SW)   1057 mstly cldy   none 
     18:00    63    51     17   221   (SW)   1285 mstly cldy   none 
     19:00    61    50     12   222   (SW)   1072 mstly cldy   none 
     20:00    60    50      8   235   (SW)    876 mstly cldy   none 
     21:00    61    50     10   265    (W)    844  ptly cldy   none 
     22:00    60    51      7   224   (SW)         ptly cldy   none 
     23:00    58    51      6   189    (S)        mstly clr    none 
     00:00    58    49      9   191    (S)        mstly clr    none 
     01:00    59    48      9   208  (SSW)    534    clear     none 
     02:00    59    46     13   189    (S)    608    clear     none 
     03:00    58    46     12   206  (SSW)    621    clear     none 
     04:00    57    49     10   217   (SW)        mstly clr    none 
     05:00    57    47     15   235   (SW)        mstly clr    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: 3.2.2