Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, August 28, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
EN01  C.Smith           T.Sutherland,R.McMillan              

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
EN01  Kosmos/NA2Guider 19:41   00:45   
EN01  Shack            00:45   05:20

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
EN01/R      19:41  01:10    0    0    0    0   0.1  5.4   0    0
EN01/R      01:10  06:28    0    0    0    0   0.0  5.3   0    0

note: scheduled times listed include instrument change time

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

We had nice weather all night so it was a busy night of engineering. 

Engineering tasks completed:
- echelle and arctic test images as requested
- alt controller reset
- na2 rotator zeroed
- kcam and gcam testing - some drift found, see engineering email
- gcam and kimage inst block
- shack collimation
- 100pt pointing model implemented

Arcsat power supply is not working, see engineering email.

Motion error during pointing model at 57.6deg alt heading downwards at 3:25am.

                    ------- 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
--------------------------------------------------------------------------
20:29 kosmos   420( 1456) 150  51  18.5 19.7 19.3 19.4 18.4   --  1.03
 01:02 shack   320( 1878) 231  70  15.8 15.7 16.3 15.6 15.4   --  1.40
 01:59 guider   360( 1217) 232  74  15.3 15.2 15.8 15.1 15.1   B  1.69
 02:01 NA2gdr 36131(36131) 232  74  15.5 15.1 15.8 15.0 15.1   B  1.69


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    66    33      6   197  (SSW)   1963 mstly cldy lt rain
     17:00    68    35      6   229   (SW)   2255  ptly cldy   none 
     18:00    70    36      5   264    (W)   2205  ptly cldy   none 
     19:00    67    34      1   169    (S)   2167 mstly clr    none 
     20:00    66    30      5   185    (S)   1646 mstly clr    none 
     21:00    64    29      7   185    (S)   1552 mstly clr    none 
     22:00    63    28     19   141   (SE)   1945 mstly clr    none 
     23:00    62    26     18   131   (SE)   2012 mstly clr    none 
     00:00    61    25     17   127   (SE)   2141    clear     none 
     01:00    60    32     18   135   (SE)   1976    clear     none 
     02:00    60    32     16   144   (SE)   1992    clear     none 
     03:00    59    31      7   124   (SE)   2048    clear     none 
     04:00    58    31     12   141   (SE)   2143    clear     none 
     05:00    58    31      7   184    (S)   1990    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: 3.2.2