Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, June 19, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WY01  M.Brotherton      M.Brotherton,Class    
UV01  R.Squillace       R.Squillace           
GS01  M.Crenshaw        M.Davis               

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  KOSMOS         20:23   22:02   
UV01  KOSMOS         22:05   01:10
GS01  KOSMOS         01:11   05:05

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R      20:23  22:03    0    0    0    0   0.0  1.7   0    0
UV01/R      22:03  01:10    0    0    0    0   1.0  2.2   0    0
GS01/R      01:10  05:47    0    0    0    0   4.6  0.0   0    0

note: scheduled times listed include instrument change time

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

We had beautiful weather all night.

No telescope or 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
--------------------------------------------------------------------------
 21:11 khigh   414( 1465)  54  57  18.3 20.2 19.9 19.7 18.5   --  1.16
 01:32 klow   464( 1366) 229  53  18.5 16.9 17.6 16.7 17.3   --  1.00


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    67    46      7    83    (E)   1348  ptly cldy   none 
     17:00    68    45     12   114  (ESE)   1168  ptly cldy   none 
     18:00    69    45      2   127   (SE)   1466 mstly clr    none 
     19:00    67    43     11   142   (SE)    912    clear     none 
     20:00    67    40      2   235   (SW)   1374    clear     none 
     21:00    66    40      6   226   (SW)   1603    clear     none 
     22:00    65    40      7   222   (SW)   1500    clear     none 
     23:00    65    41      6   206  (SSW)   1383    clear     none 
     00:00    66    38      3   253  (WSW)   2285    clear     none 
     01:00    65    37      5   259    (W)   2378    clear     none 
     02:00    65    37      7   238  (WSW)   2673    clear     none 
     03:00    64    38      3   239  (WSW)   2980    clear     none 
     04:00    62    40      7   253  (WSW)   2988    clear     none 
     05:00    61    41     10   225   (SW)   2284    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: