Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, July 16, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
OU02  G.Garcia          G.Garcia              
JH04  N.Oliveros-Gomez  N.Oliveros-Gomez      

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU02  NICFPS         20:21   22:36   
JH04  NICFPS         01:32   05:20

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU02/R      20:21  01:10   2.6   0    0    0   0.4  1.8   0    0
JH04/R      01:10  05:59   1.2   0    0    0   3.6  0.0   0    0

note: scheduled times listed include instrument change time

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

Start of the night was clear with excellent seeing 

Closed for dust counts >4000 at 22:36

Reopened at 01:32 after the dust settled down

Closed again at 03:12 due to radar returns in the vicinity

Reopened at 04:04 for the remainder of the night



                    ------- 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
--------------------------------------------------------------------------
 21:01 NICFPS     711( 1922) -14  73  14.4 15.2 15.4 15.1 14.2   MK-J  0.81
 21:02 NA2gdr 45999(45999) -15  73  14.3 15.2 15.3 15.0 14.2   --  1.31
 01:45 NICFPS     734( 1849) -128  60  13.3 13.1 14.1 12.9 13.0   MK-J  1.22
 02:48 NICFPS     575( 1664) -125  49  12.5 12.4 13.1 12.1 12.2   MK-J  1.02

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    58    42      5   190    (S)   2524   cloudy     none 
     17:00    60    26      3   196  (SSW)   2481   cloudy     none 
     18:00    61    27      1   217   (SW)   2582   cloudy     none 
     19:00    60    25     10    86    (E)   2181   cloudy     none 
     20:00    58    24     13    82    (E)   2521    clear     none 
     21:00    58    32     16   122  (ESE)   2586    clear     none 
     22:00    57    27     15   122  (ESE)   4203 mstly clr    dust 
     23:00    56    31      8   107  (ESE)   5006 mstly clr    dust 
     00:00    55    31      9   182    (S)   5014 mstly clr    dust 
     01:00    57    30     10   186    (S)   4273 mstly clr    dust 
     02:00    55    30     12   206  (SSW)   3875 mstly clr    none 
     03:00    55    30      6   191    (S)   3623 mstly cldy   none 
     04:00    54    49      3   222   (SW)        mstly clr    none 
     05:00    55    48      2   203  (SSW)        mstly clr    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: