Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, April 12, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WC01  A.Jaskot          A.Jaskot              
CU02  A.Stephens        A.Stephens            

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WC01  ECHELLE        --:--   --:--   
CU02  KOSMOS         00:25   02:20

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WC01/R      19:40  01:10    4.7    0    0    0   0  0.0   0    0
CU02/R      01:10  06:27    2   2.2    0    0   1.9   0   0    0

note: scheduled times listed include instrument change time

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

We had a pretty windy start of the night with gusts over closure limits, in addition to clouds. 

Opened at 00:20. WC01 called it quits for the night at 23:30 saying they didn't have enough time left for science. 0.8 hours of dark time were donated to CU02 because of this. This change has been noted in the section above. 

Closed at 2:20 due to clouds. Called it quits at 3am per observer's instruction. No productive science was had by any program tonight :(

No telescope/instrument 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
--------------------------------------------------------------------------
 00:51 kosmos   710( 1134) 104  65   6.2  6.9  8.1  6.3  6.1   --  1.42

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    52    21     22   266    (W)   1038  ptly cldy   none 
     17:00    52    20     31   255  (WSW)   1018  ptly cldy   none 
     18:00    51    18     27   270    (W)    882  ptly cldy   none 
     19:00    49    17     24   251  (WSW)   1317  ptly cldy   none 
     20:00    49    22     27   259    (W)   1187  ptly cldy   none 
     21:00    48    26     24   262    (W)   1777  ptly cldy   none 
     22:00    46    30     30   269    (W)   1849  ptly cldy   none 
     23:00    44    30     28   267    (W)   2820  ptly cldy   none 
     00:00    43    30     18   265    (W)   1001  ptly cldy   none 
     01:00    43    31     11   263    (W)    714  ptly cldy   none 
     02:00    43    30     20   273    (W)    644 mstly cldy   none 
     03:00    43    30     22   268    (W)    472 mstly cldy   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