Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, April 15, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
AV01  A.Verbiscer       A.Verbiscer           
NM02  K.Sanderson       K.Sanderson           

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AV01  ARCTIC         19:42   01:05   
NM02  KOSMOS         01:21   05:41

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
AV01/R      19:42  01:10    0    0    0    0   5.5  0.0   0    0
NM02/R      01:10  06:24    0    0    0    0   4.6  0.6   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: H.Abbot

Dataq restarted at start of shift
Alcor D drive has filled up and Skywatch is complaining about it. I thought this caused the skycam feed to stop, but the feed just started up again an hour later and ended up being functional most of the night.

Otherwise it was a nice clear night with no telescope or instrument issues.

                    ------- 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
--------------------------------------------------------------------------
 20:17 arctic   489( 1060)  65  31   6.4  7.4  7.7  6.5  6.3   r  1.55
 21:20 arctic   409(  920)  52  42   6.0  6.3  6.8  5.7  5.9   r  1.08
 22:39 arctic   443(  921)  45  35   6.1  5.5  6.2  5.2  5.5   r  1.20
 01:35 kosmos   498(  850) -22  58   6.4  5.3  6.0  5.2  5.8   --  0.90

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    50    11     17   257  (WSW)    523    clear     none 
     17:00    48    11     14   247  (WSW)    625    clear     none 
     18:00    47     9      7   259    (W)    552    clear     none 
     19:00    47     8     12   250  (WSW)    615    clear     none 
     20:00    44     6     10   264    (W)    669    clear     none 
     21:00    43     6     12   250  (WSW)    707    clear     none 
     22:00    43     1     14   246  (WSW)    716    clear     none 
     23:00    42    -1     12   240  (WSW)    699    clear     none 
     00:00    44    -3     15   268    (W)    545    clear     none 
     01:00    43     0     14   271    (W)    533    clear     none 
     02:00    43     0     16   290  (WNW)    531    clear     none 
     03:00    43     0     13   275    (W)    647    clear     none 
     04:00    43     2      8   263    (W)    543    clear     none 
     05:00    43     7     10   262    (W)    597    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