Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, July 06, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WY03  M.Brotherton      M.Brotherton&Class,M.Moe
CU01  A.Kowalski        J.Libby-Roberts       

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY03  KOSMOS         23:00   01:10   
CU01  ARCTIC         01:22   05:39

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY03/O      20:24  01:10   2.7   0    0    0   1.1  1.0   0    0
CU01/R      01:10  05:53    0    0    0    0   0.0  4.7   0    0

note: scheduled times listed include instrument change time

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

Overcast with nearby radar for most of the first half of the night. We opened with about 2 hours left of A-half and struggled with clouds the whole time, but the students got more practice with KOSMOS! B-half started off cloudy and cleared up, but we were getting photons the whole time. We had quite good seeing despite the clouds. 

No telescope or instrument problems. 

Be aware of ARCTIC fan power cord across NA2 side of dome floor. 

                    ------- 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
--------------------------------------------------------------------------
 23:09 khigh   390( 1278) -43  61  15.9 16.8 17.7 16.7 15.6   --  0.80
 01:26 arctic   459( 1367) 163  74  15.1 15.2 15.8 15.1 14.9   SEMROCK  0.80

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    60    32     24    72  (ENE)    660 mstly cldy   none 
     17:00    67    32      5    97    (E)    969 mstly cldy   none 
     18:00    67    33      4    70  (ENE)   1342 mstly cldy   none 
     19:00    65    33     10    61  (ENE)   1181 mstly cldy   none 
     20:00    63    33     10   111  (ESE)   1223 mstly cldy   none 
     21:00    61    32      7    24  (NNE)   1700 mstly clr    none 
     22:00    63    32      1   209  (SSW)   1423 mstly clr    none 
     23:00    60    32      5   180    (S)   1820  ptly cldy   none 
     00:00    61    32     11   136   (SE)   1894 mstly cldy   none 
     01:00    60    32     13   156  (SSE)   1791 mstly cldy   none 
     02:00    59    31     17   156  (SSE)   1494 mstly cldy   none 
     03:00    58    31      5   105  (ESE)   1497  ptly cldy   none 
     04:00    57    30      7   125   (SE)   1573 mstly clr    none 
     05:00    57    30     12   138   (SE)   1494    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: