Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, March 20, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW13  C.Orion           C.Orion, D.Singh, I.Chow
OU02  Sameer            Sameer                

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW13  ARCTIC         19:23   01:03   
OU02  KOSMOS         01:15   05:53

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW13/R      19:23  01:10    0    0    0    0   3.7  2.1   0    0
OU02/R      01:10  06:57    0    0    0    0   5.8  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky

Dataq frozen at checkout.

No telescope problems tonight.

                    ------- 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
--------------------------------------------------------------------------
 20:06 arctic   455( 1508) 216  62  16.5 18.2 17.9 17.5 16.6   SDSS_r  0.73
 20:09 NA2gdr 36531(36531) 217  62  16.6 18.1 17.9 17.4 16.6   clear  0.94
 01:28 KOSMOS 480(       )  20  74  15.9 15.1 16.0 14.6 15.4   --  0.88

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    66    17     12   324   (NW)    556    clear     none 
     17:00    68    18      5   255  (WSW)    224    clear     none 
     18:00    65    18      6   263    (W)    356    clear     none 
     19:00    64    15      4   259    (W)    238    clear     none 
     20:00    62    12      1   194  (SSW)    302    clear     none 
     21:00    63    14     11    24  (NNE)    422    clear     none 
     22:00    63    13      9    38   (NE)    428    clear     none 
     23:00    62    12      7    94    (E)    377    clear     none 
     00:00    62    12      7   109  (ESE)    319    clear     none 
     01:00    62    12      5   126   (SE)    549    clear     none 
     02:00    60    11      6   186    (S)    463    clear     none 
     03:00    61    11      5   207  (SSW)    482    clear     none 
     04:00    61    12      1   198  (SSW)    453    clear     none 
     05:00    62    13      2   235   (SW)    335    clear     none 
     06:00    62    12      2   236   (SW)    375    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