Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, February 22, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
CU05  A.Kowalski        A.Kowalski, Y.Notsu   
UW02  P.Yoachim         Z.Liu, Z.Xu           
UW09  C.Orion           C.Orion               

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU05  KOSMOS         18:03   00:00   
UW02  KOSMOS         00:00   03:36
UW09  ARCTIC         02:44   05:50

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU05/R      18:03  00:10    0    0    0    0   0.3  5.8   0    0
UW02/R      00:10  02:40    0    0    0    0   2.5  0.0   0    0
UW09/R      02:40  06:29    0    0    0    0   3.8  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky

No 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
--------------------------------------------------------------------------
 18:36 klow   475(  820) 170  70   2.6  5.2  4.7  5.2  3.5   empty  1.17
 00:14 kosmos   485(  656) -61  37   2.8  1.1  2.3  1.4  2.2   empty  1.29
 02:56 arctic   501(  743) -20  74   3.3  1.0  2.5  1.6  2.3   CUVR  0.82
 02:57 NA2gdr 36823(36823) -20  74   3.6  1.0  2.5  1.6  2.2   R  0.98

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    42    10      8   260    (W)    545 mstly clr    none 
     17:00    39     6      3   258  (WSW)    673 mstly clr    none 
     18:00    38     6      1   133   (SE)    686 mstly clr    none 
     19:00    36     5      2   202  (SSW)    429  ptly cldy   none 
     20:00    38     4      6   207  (SSW)    361 mstly cldy   none 
     21:00    38     5      7   216   (SW)    484  ptly cldy   none 
     22:00    38     4      5   237  (WSW)    498    clear     none 
     23:00    37     4      5   186    (S)    690    clear     none 
     00:00    37     5      8   128   (SE)    912    clear     none 
     01:00    37     7      1   178    (S)   1724    clear     none 
     02:00    37     9      2   196  (SSW)   2238    clear     none 
     03:00    38     7      3   201  (SSW)   2045    clear     none 
     04:00    39     7      1   209  (SSW)   1889    clear     none 
     05:00    39     7      1   198  (SSW)   1684    clear     none 
     06:00    38    10      2   164  (SSE)   1022    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: 3.1.8