Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, October 18, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UV03  J.Davidson        J.Davidson            
UV02  S.Majewski        J.Davidson            

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UV03  DSSI           --:--   --:--   
UV02  DSSI           --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UV03/R      18:35  01:10  0.6  6.0    0    0   0.0  0.0   0    0
UV02/R      01:10  07:02  5.9    0    0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: H.Abbot

NA2 rotator zeroed during afternoon checkout, offset -0.078

Nearby rain and moderate to heavy cloud throughout the most of the night. Cleared up by the end but high humidity kept us closed.

No telescope or instrument issues encountered.

                    ------- 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    52    39      4   188    (S)    261 mstly cldy   none 
     17:00    54    38      3   261    (W)    158   cloudy     none 
     18:00    50    41      1   227   (SW)          cloudy     none 
     19:00    50    42      3   262    (W)          cloudy     none 
     20:00    51    41      2   266    (W)          cloudy     none 
     21:00    50    41      2   206  (SSW)          cloudy     none 
     22:00    49    43      2   200  (SSW)          cloudy     rain 
     23:00    47    41      5   183    (S)          cloudy     none 
     00:00    48    42      5   236   (SW)          cloudy     none 
     01:00    49    45      9   188    (S)          cloudy     none 
     02:00    48    44      8   183    (S)          cloudy     none 
     03:00    50    42      6   167  (SSE)          cloudy     rain 
     04:00    49    44     10   183    (S)         ptly cldy  humid 
     05:00    44    42      3   172    (S)        mstly clr   humid 
     06:00    46    42      3   250  (WSW)        mstly clr   humid 

     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