Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, September 21, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
AP02  S.Merkowitz       R.McMillan,T.Sutherland,NASAfolk
UW07  S.Hawley          S.Hawley,L.Hebb       
UW07  S.Hawley          S.Hawley,L.Hebb       
UW01  P.Yoachim         Z.Xu,D.Meng,Z,Liu     

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
AP02  APOLLO         --:--   --:--   
UW07  ECHELLE        23:53   01:10
UW07  ECHELLE        01:10   03:51
UW01  KOSMOS         03:57   06:06

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
AP02/R      19:09  22:10    0    3    0    0   0.0   0    0    0
UW07/R      22:10  01:10    0   1.6    0    0   0.0  1.4  0    0
UW07/R      01:10  03:57    0    0    0    0   1.1  1.7   0    0
UW01/R      03:57  06:43    0    0    0    0   2.8  0.0   0    0

note: scheduled times listed include instrument change time

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

Some rain  and clouds to start off the night, but I was able to open just before 23:00. Clouds rolled in soon after, but we were able to see through them with echelle and kosmos for the most part. 

Tert tilts for echelle pointing still need to be adjusted.

Dome computer got logged out of TUI at 5:55ish this morning for some reason. 

No telescope or instrument problems tonight. 

                    ------- 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
--------------------------------------------------------------------------
 22:57 ecamera    405(  206)   5  53  13.2 14.8 15.5 14.5 13.3   clear  1.03
 04:12 kosmos   430( 1109) -121  60  13.1 12.3 12.8 12.3 12.8   --  1.34


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    61    40      2   128   (SE)    267 mstly cldy lt rain
     17:00    62    40      5   108  (ESE)    240 mstly cldy   none 
     18:00    61    39      6    91    (E)    260 mstly cldy   none 
     19:00    60    39      2    93    (E)    287 mstly cldy   rain 
     20:00    58    39     12   122  (ESE)    256 mstly cldy lt rain
     21:00    59    37      9    92    (E)    268 mstly cldy   none 
     22:00    58    35     12    87    (E)    272 mstly cldy   none 
     23:00    56    38     19    79    (E)    492 mstly clr    none 
     00:00    54    45     19    74  (ENE)   1319 mstly clr    none 
     01:00    53    47     16   105  (ESE)        mstly clr    none 
     02:00    55    43     14   100    (E)        mstly clr    none 
     03:00    55    33     17   116  (ESE)   1081  ptly cldy   none 
     04:00    56    33     15   118  (ESE)    674  ptly cldy   none 
     05:00    56    41     18   124   (SE)    661  ptly cldy   none 
     06:00    55    45     20   125   (SE)    796 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: 3.2.2