Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, June 05, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WY01  M.Brotherton      M.Brotherton          
CU01  A.Stephens        P.Wachiraphan         
AP01  S.Merkowitz       R.McMillan            
                                              
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  KOSMOS         --:--   --:--   
CU01  KOSMOS         --:--   --:--
AP01  APOLLO         04:46   05:44
                             
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R     20:18  22:50   2.5   0    0    0   0.0  0.0   0    0
CU01/R     22:50  04:46   1.4  4.5   0    0   0.0  0.0   0    0
AP01/R     04:46  05:46    0    0    0    0   0.0  1.0   0    0

note: scheduled times listed include instrument change time

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

Clouds all night, and some elevated dust levels, kept us closed until the very end of the night.  Just in time for APOLLO!  5 out of 6 reflectors tonight.

No 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
--------------------------------------------------------------------------
 04:53 APOLLO     425( 1805)  18  39  11.1 10.3 12.4 10.0 10.4   --  2.00

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    56    32     10   355    (N)   1616   cloudy   lt rain
     17:00    55    31     12    21  (NNE)   1895   cloudy     none 
     18:00    56    30     13   350    (N)   2669 mstly cldy   none 
     19:00    56    31      5     3    (N)   2539 mstly cldy   none 
     20:00    53    31     11    10    (N)   4923   cloudy     dust 
     21:00    53    31     16    52   (NE)   5314   cloudy     dust 
     22:00    49    31     26    70  (ENE)   1358   cloudy     none 
     23:00    50    30      6    20  (NNE)   2229 mstly cldy   none 
     00:00    53    30      2   107  (ESE)   1639   cloudy     none 
     01:00    54    26      1   244  (WSW)   2930   cloudy     none 
     02:00    53    30      1   252  (WSW)   4455   cloudy     none 
     03:00    52    29      6   323   (NW)   3412 mstly cldy   none 
     04:00    52    28      7   350    (N)   2266  ptly cldy   none 
     05:00    50    30      7   342  (NNW)   2207  ptly cldy   none 
     06:00    54    31      9   347  (NNW)   2041  ptly 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