Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, April 28, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
JH02  C.Ingebretsen     C.Ingebretsen         
UV02  A.Verbiscer       A.Verbiscer           

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
JH02  ECHELLE        --:--   --:--   
UV02  ARCTIC         --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
JH02/R      19:52  01:10    0  5.3    0    0   0.0  0.0   0    0
UV02/R      01:10  06:09  1.1  3.8    0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

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

Dataq needed restarting twice at the start of the night and once during the night. WinDaq Acquisition window had an error message saying it couldn't open a file, and the current status says 'FILE FULL'.

Didn't open tonight because of complete cloud coverage and high dust levels throughout. 

                    ------- 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
--------------------------------------------------------------------------

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    59    10     24   231   (SW)   5788 mstly cldy   none 
     17:00    57    10     17   257  (WSW)   6038   cloudy     none 
     18:00    56     8     20   259    (W)   6187   cloudy     none 
     19:00    55     9     14   240  (WSW)   5165   cloudy     none 
     20:00    53     9     11   226   (SW)   4607   cloudy     none 
     21:00    53     9     10   264    (W)   3897   cloudy     none 
     22:00    53     8     12   278    (W)   3967   cloudy     none 
     23:00    53     8     14   295  (WNW)   4288   cloudy     none 
     00:00    53     8     11   270    (W)   3940   cloudy     none 
     01:00    52     7     11   239  (WSW)   3909   cloudy     none 
     02:00    52     7     12   264    (W)   3952   cloudy     none 
     03:00    51     9     10   262    (W)   4202   cloudy     none 
     04:00    51     9     10   266    (W)   4289   cloudy     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