Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, September 22, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
NM02  S.Monty           S.Monty               
OU02  G.Garcia          G.Garcia              
OU01  J.Serna           G.Garcia              

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM02  ECHELLE        --:--   --:--   
OU02  NICFPS         --:--   --:--
OU01  NICFPS         --:--   --:--

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM02/R      19:08  01:10    0    6    0    0   0.0  0    0    0
OU02/R      01:10  05:44    1.9   2.7   0    0   0   0   0    0
OU01/R      05:44  06:44    1    0    0    0   0   0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland

Rain rain go away! Weather was atrocious all night, I called it at 4:30am since there was no hope of it getting better before twilight. 

I did not do test slews tonight as I did not feel comfortable opening mirror covers with all this rain. 

DSSI has been packed up and moved to its home in the corner of the dome. 

3.5m air sensor is calibrating at night, it happened last night reading 300% humidity and tonight at 4:15am reading 275% humidity. Plots in grafana show the spike as well. 

                    ------- 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    47     20   125   (SE)          cloudy     rain 
     17:00    55    33     17   131   (SE)    404   cloudy     none 
     18:00    54    32     12   109  (ESE)    474   cloudy     none 
     19:00    53    32     11    94    (E)    955   cloudy     none 
     20:00    52    31     15    86    (E)    537   cloudy     rain 
     21:00    51    28     12    92    (E)    375   cloudy     rain 
     22:00    50    29     15    92    (E)    521   cloudy     rain 
     23:00    50    28     18    83    (E)    156   cloudy     rain 
     00:00    50    28     26   118  (ESE)    316   cloudy     rain 
     01:00    49    28     20   149  (SSE)    519   cloudy     rain 
     02:00    49    28     13   112  (ESE)    381   cloudy   lt rain
     03:00    50    28     21   109  (ESE)    560   cloudy     rain 
     04:00    50    28     25   127   (SE)    673   cloudy     rain 

     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