Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, April 27, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UV06  D.Demars          D.Demars              
NM05  N.Chanover        N.Chanover,A.Peck     

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV06  TripleSpec     20:03   01:07   
NM05  ECHELLE        01:10   05:28

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV06/R      19:51  01:10    0    0    0    0   0.0  5.3   0    0
NM05/R      01:10  06:10    0    0    0    0   1.6  3.4   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: H.Abbot

Arcsat-user computer was problematic, Jack sent out a separate email detailing the issues. Basically, computer was restarted since ACP was acting up multiple times, and then the computer failed to  boot back into Windows. 

NM05 was delayed by flights, so donated some time to NM08 who took the first hour of B-half.

Otherwise night went smoothly, no telescope or instrument issues 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
--------------------------------------------------------------------------
 20:09 tcamera    692( 1582)  55  60   9.9 11.6 10.9 11.7 10.0   Ks  1.22
 21:18 tcamera    550( 1377)  22  69  10.1 10.2 10.3  9.9  9.8   Ks  0.93
 22:42 tcamera    542( 1334) -35  67   9.9  9.5  9.9  9.4  9.6   Ks  0.99
 01:15 ecamera    508(   25)   1  41   8.8  8.6  9.3  8.5  8.4   Clear  1.12


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    53     9     21   227   (SW)   3029    clear     none 
     17:00    54     8     22   253  (WSW)   3690    clear     none 
     18:00    55    12     23   268    (W)   3617    clear     none 
     19:00    53    14     20   264    (W)   3119    clear     none 
     20:00    50    13     12   262    (W)   3065    clear     none 
     21:00    50    13     15   243  (WSW)   3003    clear     none 
     22:00    50    11     16   263    (W)   3116    clear     none 
     23:00    50    10     14   255  (WSW)   3275    clear     none 
     00:00    50     7     16   263    (W)   3394    clear     none 
     01:00    48     6     18   248  (WSW)   3427    clear     none 
     02:00    48     7     17   259    (W)   3376    clear     none 
     03:00    47     6     13   273    (W)   2853 mstly clr    none 
     04:00    46     7     13   283  (WNW)   2970 mstly clr    none 
     05:00    45     6     18   263    (W)   2624    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: 3.1.8