Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, September 25, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
OU05  N.Vernekar        N.Vernekar            
BY02  E.Hintz           S.Felvus              

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
OU05  ECHELLE        --:--   --:--   
BY02  TSPEC          --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
OU05/R      19:04  01:10    0   6.1   0    0   0.0  0.0   0    0
BY02/R      01:10  06:46    0   5.6   0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

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

Salt and pepper noise on echelle at checkout, thanks Gordon for the quick recovery. 

We had a lot of fog tonight as well as some nearby radar. We didn't open. 

                    ------- 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    56    54     15   206  (SSW)        mstly cldy  humid 
     17:00    58    53     18   216   (SW)        mstly cldy  humid 
     18:00    56    53     18   193  (SSW)          cloudy     fog  
     19:00    54    53     14   216   (SW)          cloudy     fog  
     20:00    54    53     16   205  (SSW)          cloudy     fog  
     21:00    53    53     10   209  (SSW)         ptly cldy  humid 
     22:00    53    50     10   219   (SW)         ptly cldy  humid 
     23:00    53    51     11   213  (SSW)         ptly cldy  humid 
     00:00    53    53     11   222   (SW)         ptly cldy  humid 
     01:00    53    52      9   240  (WSW)          cloudy     fog  
     02:00    53    53      9   215   (SW)          cloudy     fog  
     03:00    53    53     12   223   (SW)          cloudy     fog  
     04:00    52    52      8   226   (SW)          cloudy     fog  
     05:00    52    52      3   221   (SW)          cloudy     fog  



     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