Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, March 07, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
UW05  B.Benda           B.Benda               
UW11  S.Hawley          S.Hawley, L.Hebb      
AP01  S.Merkowitz       R.McMillan, T.Sutherland

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW05  ECHELLE        18:14   00:10   
UW11  ECHELLE        00:10   06:14
AP01  APOLLO         06:14   07:14

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW05/R      18:14  00:10    0    0    0    0   4.2  1.7   0    0
UW11/R      00:10  06:14    0    0    0    0   0.0  5.1   0    0
AP01/R      06:14  07:14    0    0    0    0   0.0  1.0   0    0

note: scheduled times listed include instrument change time

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

Daylight Savings time change tonight, UW11 is actually a 5 hr program, not 6 hrs that was computed.

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
--------------------------------------------------------------------------
 18:40 ecamera    512( -123) -27  64   2.7  5.7  5.1  5.1  3.5   ND3  0.97
 20:53 ecamera    432( -316) -12  55   3.2  3.1  3.4  2.7  2.9   Clear  0.86
 00:16 ecamera    533( -272) -35  48   4.5  1.9  3.5  2.4  3.7   Clear  1.05
 06:20 APOLLO     450( 1427) -23  45   4.2  1.8  3.6  2.7  3.4   --  0.90

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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    46    18     12   264    (W)    511    clear     none 
     17:00    44    17     10   241  (WSW)    650    clear     none 
     18:00    41    18      8   247  (WSW)    704    clear     none 
     19:00    38    17      1   188    (S)    640    clear     none 
     20:00    38    19      5   236   (SW)    565    clear     none 
     21:00    37    19      2   193  (SSW)    531    clear     none 
     22:00    38    17      3   229   (SW)    608    clear     none 
     23:00    40    16      2   227   (SW)    517 mstly clr    none 
     00:00    40    18      6   255  (WSW)   1097 mstly clr    none 
     01:00    39    16      7   290  (WNW)   1064    clear     none 
     03:00    40    15      2   257  (WSW)   1106    clear     none 
     04:00    40    17      3   234   (SW)   1094    clear     none 
     05:00    40    17      2   239  (WSW)   1113    clear     none 
     06:00    40    19      4   253  (WSW)   1330    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