Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, January 31, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
WY01  M.Brotherton      M.Brotherton          
GS02  D.Gies            D.Gies                
WY03  C.Kobulnicky      C.Kobulnicky          

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
WY01  KOSMOS         --      --      
GS02  ECHELLE        --      --
WY03  ECHELLE        --      --

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
WY01/R      17:44  20:24    0   2.7   0    0   0.0  0.0   0    0
GS02/R      20:24  00:10    0   3.8   0    0   0.0  0.0   0    0
WY03/R      00:10  06:49    0   6.6   0    0   0.0  0.0   0    0

note: scheduled times listed include instrument change time

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

3.5m remained closed for the night due to remaining snow on the roof of the dome. 

Dome parked due east, morning fills at 4:00, left the dome heaters on in the morning. 

                    ------- 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    35    14     12   333  (NNW)    921    clear     none 
     17:00    37    13     13     2    (N)   1393    clear     none 
     18:00    38    11     21    16  (NNE)   2356    clear     none 
     19:00    38    12     30    18  (NNE)   1902    clear     none 
     20:00    39    13     22    23  (NNE)   1596    clear     none 
     21:00    38    14      7    21  (NNE)   1380    clear     none 
     22:00    37    15     15    25  (NNE)   1460    clear     none 
     23:00    36    15     16    23  (NNE)   1345    clear     none 
     00:00    37    14     14    57  (ENE)   1249    clear     none 
     01:00    38    13     12    80    (E)   1180    clear     none 
     02:00    37    13     21    78  (ENE)   1242    clear     none 
     03:00    37    14     15    78  (ENE)   1358    clear     none 
     04:00    36    14     14    85    (E)   1323    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