Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, May 16, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW07  P.Szkody          P.Szkody              
JH05  N.Zakamska        D.Bizyaev             

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW07  KOSMOS         20:05   00:57   
JH05  ECHELLE        01:03   05:03

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW07/R      20:05  01:10    0    0    0    0   4.8  0.3   0    0
JH05/R      01:10  05:54    0    0    0    0   4.7  0.0   0    0

note: scheduled times listed include instrument change time

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

Smooth night with no 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
--------------------------------------------------------------------------
 20:51 khigh   406( 1210)  68  72  13.3 15.1 15.1 14.4 13.4   --  1.24
 01:10 ecamera    488(  139) 160  59  12.4 11.7 12.4 11.6 12.1   clear  1.30

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    66    16     20   234   (SW)    747    clear     none 
     17:00    68    19     17   234   (SW)   1156    clear     none 
     18:00    64    17     21   258  (WSW)   1550    clear     none 
     19:00    61    13     30   226   (SW)   4070    clear     dust 
     20:00    58     8     24   240  (WSW)   3342    clear     none 
     21:00    57     6     15   233   (SW)   3334    clear     none 
     22:00    57     5     24   267    (W)   1441    clear     none 
     23:00    54     5     19   267    (W)   1163    clear     none 
     00:00    54     9     17   266    (W)   1287    clear     none 
     01:00    53    14     25   267    (W)   1302    clear     none 
     02:00    53    16     25   269    (W)   1295    clear     none 
     03:00    52    18     26   267    (W)   1507    clear     none 
     04:00    50    18     22   257  (WSW)   1766    clear     none 
     05:00    49    18     11   264    (W)   1705    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