Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, February 18, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
NM02  G.Rosales         G.Rosales             
UW02  P.Yoachim         D.Meng,Z.Xu           
UW04  B.Choi            B.Choi                

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM02  ECHELLE        --:--   --:--   
UW02  KOSMOS         --:--   --:--
UW04  ECHELLE        --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM02/R      18:00  00:10   4.8  1.4   0    0   0.0  0.0   0    0
UW02/R      00:10  03:22   3.2   0    0    0   0.0  0.0   0    0
UW04/R      03:22  06:34   3.2   0    0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

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

Wind gusts up over 50mph, 1-micron dust counts over 20,000, and some low clouds kept us closed all night. 

No telescope or instrument problems. 

                    ------- 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
--------------------------------------------------------------------------


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    41     6     38   259    (W)  14545 mstly clr    dust 
     17:00    38    13     29   267    (W)  15957 mstly clr    dust 
     18:00    35     8     30   273    (W)  27021 mstly clr    dust 
     19:00    34     7     29   241  (WSW)  19386 mstly clr    dust 
     20:00    34     5     27   267    (W)  10995 mstly clr    dust 
     21:00    33     5     24   258  (WSW)   8932 mstly clr    dust 
     22:00    32    10     23   261    (W)   5403 mstly clr    dust 
     23:00    30    12     23   260    (W)   5528 mstly clr    dust 
     00:00    29    14     14   268    (W)   2957  ptly cldy   none 
     01:00    28    16     25   272    (W)   4419   cloudy     dust 
     02:00    28    18     30   282  (WNW)   3009   cloudy     dust 
     03:00    28    18     27   286  (WNW)          cloudy     none 
     04:00    27    19     37   297  (WNW)          cloudy     none 
     05:00    27    20     29   267    (W)          cloudy     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