Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, April 07, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW02  B.Benda           B.Benda               
OU01  M.Kilic           M.Kilic               

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW02  ECHELLE        22:17   01:09   
OU01  KOSMOS         01:10   04:12
OU01  ECHELLE        04:14   06:32

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW02/R      19:36  01:10   2.7   0    0    0   2.7  0.1   0    0
OU01/R      01:10  06:34    0    0    0    0   0.0  5.4   0    0

note: scheduled times listed include instrument change time

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

gcam exposures failing at checkout, fixed with hub startNubs

stayed closed first few hours due to rainclouds in the vicinity.



                    ------- 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
--------------------------------------------------------------------------
 22:23 ecamera    481( -140) -44  52   4.0  5.8  6.6  5.5  4.2   ND3  1.36
 01:24 kosmos   381(  692) 173  66   5.6  4.5  5.0  4.4  5.3   --  1.36
 04:28 ecamera    483( -190)  11  57   4.6  4.8  5.3  4.8  5.1   ND3  0.59

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    43    32      3   346  (NNW)    613   cloudy     none 
     17:00    41    32      4   316   (NW)          cloudy     none 
     18:00    44    32      1   321   (NW)    577   cloudy     none 
     19:00    40    30     10    16  (NNE)         ptly cldy   none 
     20:00    39    31      2   328  (NNW)         ptly cldy   none 
     21:00    38    31      5    10    (N)         ptly cldy   none 
     22:00    40    31      4   360    (N)           clear     none 
     23:00    41    31      3   351    (N)    493    clear     none 
     00:00    40    31      4   356    (N)    483    clear     none 
     01:00    42    31      8   357    (N)    710    clear     none 
     02:00    42    31      6   352    (N)    751    clear     none 
     03:00    42    32      7    10    (N)    790    clear     none 
     04:00    42    29      8   358    (N)    718    clear     none 
     05:00    40    30      7    15  (NNE)    789    clear     none 
     06:00    43    30      9   354    (N)    912    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