Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, October 09, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UV05  A.Verbiscer       A.Verbiscer           
UW01  P.Yoachim         Z.Xu,D.Meng           
UW07  C.Chandler        C.Chandler,I.Chow,J.Murtagh

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV05  ARCTIC         18:52   01:04   
UW01  KOSMOS         01:19   03:49
UW07  ARCTIC         04:00   06:25

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV05/R      18:46  01:10    0    0    0    0   6.4  0.0   0    0
UW01/R      01:10  04:00    0    0    0    0   2.8  0.0   0    0
UW07/R      04:00  06:55    0    0    0    0   2.9  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend

ARCTIC LL quad mostly recovered by 20:00. 

We had a mostly clear night with decent seeing! No new telescope or instrument problems. 

                    ------- 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
--------------------------------------------------------------------------
 19:21 arctic   510( 1184)  14  36   9.9 11.8 12.0 11.7  9.8   SDSS_r  1.16
 01:30 kosmos   390(  924) -42  50   9.7  9.1  9.6  9.1  9.4   --  1.03
 04:08 arctic   405(  920)  82  49   9.4  8.7  9.3  8.7  9.0   CUVR  1.46

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    58    43      7   185    (S)    414 mstly clr    none 
     17:00    55    40     13   226   (SW)    397 mstly clr    none 
     18:00    54    42     14   210  (SSW)    397 mstly clr    none 
     19:00    50    39      9   187    (S)    438 mstly clr    none 
     20:00    49    38     13   153  (SSE)    457 mstly clr    none 
     21:00    48    38     12   156  (SSE)    484 mstly clr    none 
     22:00    49    38     12   180    (S)    489    clear     none 
     23:00    50    38     16   179    (S)    364    clear     none 
     00:00    50    39     15   181    (S)    391    clear     none 
     01:00    50    39     14   182    (S)    365    clear     none 
     02:00    49    39     13   186    (S)    369    clear     none 
     03:00    50    39     12   183    (S)    416    clear     none 
     04:00    49    39     11   188    (S)    414 mstly clr    none 
     05:00    49    40     11   187    (S)        mstly clr    none 
     06:00    49    39      6   185    (S)           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: 3.2.2