Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, February 17, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW05  B.Benda           B.Benda               
CU04  B.Fleming         C.Flores,D.Wilson,B.Fleming

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW05  ECHELLE        19:06   00:09   
CU04  KOSMOS         00:14   05:56

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW05/R      17:59  00:10  0.7   0.4   0    0   5.1  0.0   0    0
CU04/O      00:10  06:35    0    0    0    0   6.4  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend

Reset mirror covers at checkout. 

Stayed closed at the start of the night mostly due to clouds, but we had a little bit of lingering high winds and humidity from this afternoon. Once we opened up we observed through shifty seeing and clouds, but we were able to stay open for the remainder of the night. 

Power cycled dataq at end of the night since it was frozen. 

                    ------- 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
--------------------------------------------------------------------------
 19:14 ecamera    660( -225)  -6  66  -1.7  0.4  3.3  0.2 -1.2   ND2  1.63
 00:27 klow   480(  440) 108  52  -2.3 -3.1 -2.5 -3.0 -2.8   --  1.49


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    32    31     31   265    (W)        mstly cldy   none 
     17:00    31    27     20   266    (W)        mstly cldy   none 
     18:00    30    25     20   276    (W)        mstly cldy   none 
     19:00    29    20     24   269    (W)         ptly cldy   none 
     20:00    28    16     15   256  (WSW)   1499  ptly cldy   none 
     21:00    28    18     14   272    (W)    522  ptly cldy   none 
     22:00    27    19     13   281    (W)         ptly cldy   none 
     23:00    27    16     13   265    (W)         ptly cldy   none 
     00:00    28    14     16   295  (WNW)    375  ptly cldy   none 
     01:00    28    16     18   301  (WNW)    544  ptly cldy   none 
     02:00    27    15     14   291  (WNW)    594 mstly clr    none 
     03:00    27    14     12   286  (WNW)    457 mstly clr    none 
     04:00    28    13     10   273    (W)    338 mstly clr    none 
     05:00    27    12     16   280    (W)    439 mstly clr    none 
     06:00    27    16     17   233   (SW)    396 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: 3.1.8