Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, March 19, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
NM05  A.Peck            A.Peck, E.Nielsen, E.Serviss
CU02  Z.Berta-Thompson  Z.Berta-Thompson      
NM06  W.Roberson        A.Abbas, E.Serviss                                                  

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
NM05  ECHELLE        19:23   23:30   
CU02  KOSMOS         23:30   04:18
NM06  ECHELLE        04:30   06:40                             

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
NM05/R      19:23  23:30    0    0    0    0   3.2  0.9   0    0
CU02/R      23:30  04:30    0    0    0    0   5.0  0.0   0    0
NM06/R      04:30  06:58    0    0    0    0   2.5  0.0   0    0

note: scheduled times listed include instrument change time

              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky

No problems tonight.

                    ------- 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
--------------------------------------------------------------------------
 19:57 ecamera    564(  486) 214  64  15.9 17.5 17.2 16.5 15.8   clear  0.71
 21:35 ecamera    388(  221) -14  32  15.1 15.1 15.6 14.8 14.7   clear  1.18
 23:45 kosmos   400( 1163) -19  52  15.2 14.0 14.8 13.2 14.2   --  1.23
 04:39 ecamera    495(  197) -89  53  14.6 12.7 13.7 12.4 13.4   ND1  1.02

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    66    20      4   249  (WSW)    674    clear     none 
     17:00    69    18     14   290  (WNW)    713    clear     none 
     18:00    65    17      5   293  (WNW)    676    clear     none 
     19:00    62    15      7   319   (NW)    506    clear     none 
     20:00    60    12      4   341  (NNW)    402    clear     none 
     21:00    59    10      4   355    (N)    308    clear     none 
     22:00    59    11      5   303  (WNW)    286    clear     none 
     23:00    60    11      5   266    (W)    269    clear     none 
     00:00    59    11      5   287  (WNW)    352    clear     none 
     01:00    57     9      5   338  (NNW)    336    clear     none 
     02:00    56     8      6   349    (N)    266    clear     none 
     03:00    57     9      3   328  (NNW)    234    clear     none 
     04:00    57     8      6     1    (N)    220    clear     none 
     05:00    55     6      7   346  (NNW)    298    clear     none 
     06:00    55     6      7   354    (N)    275    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