Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, July 29, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
EN02  C.Smith           T.Sutherland, H.Abbot, R.McMillan
                                              

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN02  APOLLO         20:13   01:10   
EN02  Shack          01:10   02:30

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN02/R      20:13  01:10    0    0    0    0   0.1  4.8   0    0
EN02/R      01:10  06:07  3.6    0    0    0   0.0  1.3   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: H.Abbot, T.Sutherland, R.McMillan

Adjusted laser power on APOLLO and fixed pointing, reconciled most instrument focii, took some data for Shack but clouds stopped us.

Mostly clear up until 02:30 when clouds started forming overhead. No telescope or instrument failures to report. 

                    ------- 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
--------------------------------------------------------------------------
 22:18 kosmos   342( 1370) 140  64  19.4 19.7 20.6 19.5 19.5   --  1.24
 23:03 NICFPS     344( 1810) 153  70  20.0 19.6 20.3 19.3 19.6   MK-J  0.65
 23:28 tcamera    339( 1605)  40  66  20.2 19.6 20.2 19.3 19.7   --  1.20
 23:54 APOLLO     364( 2341)  18  65  21.3 19.6 20.2 19.3 20.4   --  1.50
 01:06 shack   314( 2063) -112  74  21.8 19.9 20.6 19.5 21.0   --  1.50


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    79    49     11   257  (WSW)   2456   cloudy     none 
     17:00    77    47     12   200  (SSW)   2923   cloudy     none 
     18:00    78    47      3   208  (SSW)   2793 mstly clr    none 
     19:00    76    46      6   255  (WSW)   2708    clear     none 
     20:00    70    47     12    87    (E)   2794    clear     none 
     21:00    69    38      9   111  (ESE)   2130    clear     none 
     22:00    68    38     14   115  (ESE)   2247    clear     none 
     23:00    68    38      9   107  (ESE)   2395    clear     none 
     00:00    70    42      2   103  (ESE)   2608    clear     none 
     01:00    71    42      2   250  (WSW)   2580    clear     none 
     02:00    71    41      3   247  (WSW)   2476  ptly cldy   none 
     03:00    70    41      5   258  (WSW)   2528 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: 3.2.2