Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, July 28, 2026

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

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN02  Echelle        23:30   01:10   
EN02  Kosmos         01:10   02:35

   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    3.3    0    0   0.0  1.7   0    0
EN02/R      01:10  06:07    0    0    0    0   0.0  4.9   0    0

note: scheduled times listed include instrument change time

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

Closed at start of night because we were remapping the tertiary.

Just as we were getting ready to open after the tert remap, clouds started forming directly overhead. Opened around 11:30am. Closed at 2:30am due to increasing dust, and we were finishing up on sky for the night, so we were planning on closing around then anyways. 

Engineering tasks completed tonight:
- Remap of tertiary
- Wiki updates
- Echelle pointing
- Tspec inst block
- kcam focus

                    ------- 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
--------------------------------------------------------------------------
 01:52 kosmos   217( 1278) 145  62  20.8 20.4 21.1 20.0 20.0   --  0.70
 02:33 kosmos   217( 1251) 155  67  19.6 19.9 20.6 19.4 19.1   --  0.98


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    77    44      6    73  (ENE)   3465  ptly cldy   none 
     17:00    77    43     15   127   (SE)   2874  ptly cldy   none 
     18:00    77    44     11   115  (ESE)   2853 mstly clr    none 
     19:00    75    42     11   101    (E)   2731    clear     none 
     20:00    72    42      5    94    (E)   2931    clear     none 
     21:00    69    41     12   111  (ESE)   2815    clear     none 
     22:00    68    35      9    91    (E)   2117  ptly cldy   none 
     23:00    68    33      8   105  (ESE)   1906 mstly clr    none 
     00:00    68    37      9    30  (NNE)   2825    clear     none 
     01:00    71    29      2   147  (SSE)   1630    clear     none 
     02:00    70    32      2   216   (SW)   1802    clear     dust 
     03:00    68    41      1   302  (WNW)   2820    clear     none 
     04:00    69    37     11    61  (ENE)   2695    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: