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

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
EN02  C.Smith           A.Townsend,T.Sutherland

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN02  NA2GDR         21:44   22:00   
EN02  SHACK          22:00   23:30
EN02  APOLLO         23:30   00:15
EN02  ECHELLE        00:15   00:45
EN02  TSPEC          00:45   01:20

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN02/W      20:14  01:10    0   1.5   0    0   0.0  3.4   0    0
EN02/W      01:10  06:06   0.9  4.0   0    0   0.0  0.1   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend,T.Sutherland

More shutdown recovery! 
- hub & tcc restarts
- Pointing fixes on TR4/Shack and BC1/APOLLO
- Attempted a pointing check on ecam but weren't getting light on the detector
- Half a tspec inst block before dust spiked. 
- Lots of wiki edits

We stayed closed at sunset due to nearby storms. We were able to open up and do some engineering before 1-micron dust spiked--we closed at 01:20. Dust maxed out around 42,000 counts and it leveled out around 40k for a few hours.

KEPZ El Paso radar is offline for repairs. 

TR4, BC1, and NA1 eyelids all had to be commanded multiple times before they opened. 

Telescope is parked at -17,64 since we don't want to open mirror covers with dust counts inside enclosure still over 5,000. 


                    ------- 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
--------------------------------------------------------------------------
 21:46 guider   304( 1594) 101  61  20.8 22.1 21.7 21.7 20.9   Clear  1.19
 00:51 tcamera    370( 1640)  -2  65  19.5 19.6 20.3 19.5 19.4   Ks  1.23


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    74    49      0   166  (SSE)    928  ptly cldy   none 
     17:00    74    49      1    47   (NE)    796  ptly cldy   none 
     18:00    76    49      0   250  (WSW)    800  ptly cldy   none 
     19:00    75    49      2   119  (ESE)   1111  ptly cldy   none 
     20:00    72    49      9    91    (E)   1423  ptly cldy   none 
     21:00    71    49     11   114  (ESE)   1206  ptly cldy   none 
     22:00    72    48     15   152  (SSE)   1818  ptly cldy   none 
     23:00    69    47     17   134   (SE)   2513 mstly cldy   none 
     00:00    68    46     18   133   (SE)   2760 mstly clr    none 
     01:00    67    44     18   142   (SE)   3481 mstly clr    none 
     02:00    68    47     16   149  (SSE)  26169 mstly clr    none 
     03:00    68    47      9   169    (S)  36750 mstly clr    none 
     04:00    67    47      7   181    (S)  32299 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