Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, October 03, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW03  J.Murtagh         J.Murtagh, I.Chow     
NM05  E.Serviss         E.Nielsen,A.Abbas     

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW03  ARCTIC         00:02   01:11   
NM05  ECHELLE        01:14   06:28

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW03/R      18:53  01:10  5.1    0    0    0   0.5  0.7   0    0
NM05/R      01:10  06:51    0    0    0    0   0.0  5.7   0    0

note: scheduled times listed include instrument change time

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

Echelle salt&pepper noise reappeared during afternoon checkout. Restarted echelle-icc after talking to Gordon, 'hub startNubs echelle' to reconnect to TUI, and noise had disappeared.
Otherwise no telescope or instrument issues all night.

Fog to start the night, gradually disappeared but humidity stayed high until midnight. Stayed low until twilight where it spiked right around when we were done on sky. 

                    ------- 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
--------------------------------------------------------------------------
 00:10 arctic   597( 1066) -27  66   7.7  7.9  9.3  7.8  7.2   SDSS-r  1.50
 01:19 ecamera    371( -178) -18  32   7.6  7.0  7.8  6.8  7.0   Clear  1.63


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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    47    48      1   250  (WSW)          cloudy     fog  
     17:00    47    47      3   313   (NW)          cloudy     fog  
     18:00    47    48      1   232   (SW)          cloudy     fog  
     19:00    47    47      0   170    (S)         ptly cldy  humid 
     20:00    46    46      4    79    (E)           clear    humid 
     21:00    47    45      4    89    (E)           clear    humid 
     22:00    47    43      6    86    (E)           clear    humid 
     23:00    46    43     13    57  (ENE)           clear    humid 
     00:00    46    40     12    78  (ENE)           clear     none 
     01:00    45    39     12    85    (E)           clear     none 
     02:00    45    38     13    65  (ENE)           clear     none 
     03:00    45    37      2   207  (SSW)           clear     none 
     04:00    43    37      0   184    (S)           clear     none 
     05:00    44    35     17    85    (E)           clear     none 
     06:00    43    39     17    87    (E)           clear    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