Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, March 01, 2026

PROG  PI ASTRONOMER      OBSERVER(S) 
--------------------------------------------------------------------
GS03  T.Henry           J.Davidson,D.Demars,E.Breier

                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS03  DSSI           18:09   06:21        

   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS03/R      18:09  00:10    0    0    0    0   0.0  6.0   0    0
GS03/R      00:10  06:21    0    0    0    0   0.2  5.9   0    0

note: scheduled times listed include instrument change time

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

Powercycled dataq twice at start of afternoon.

Clouds rolled in and then started building right overhead during A-half, but we were mostly able to see through them. Some sparse clouds in B half. Overall a pretty quiet night.

                    ------- 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
--------------------------------------------------------------------------
 18:21 dssi   435( 1569)  54  70  12.3 13.6 13.3 12.9 12.2   692nm  0.60




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

                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
	
     16:00    57    16     11   272    (W)    205 mstly clr    none 
     17:00    57    17     10   294  (WNW)    122 mstly clr    none 
     18:00    55    16     14   285  (WNW)    188 mstly clr    none 
     19:00    53    18     12   237  (WSW)    254    clear     none 
     20:00    53    18     10   211  (SSW)    329 mstly clr    none 
     21:00    53    18      7   215   (SW)    362  ptly cldy   none 
     22:00    54    13      8   189    (S)    237 mstly cldy   none 
     23:00    54    12      9   202  (SSW)    270 mstly cldy   none 
     00:00    54    17      9   236   (SW)    271 mstly cldy   none 
     01:00    54    15      8   323   (NW)    204 mstly clr    none 
     02:00    54    18      7   347  (NNW)    225 mstly clr    none 
     03:00    54    19      7   344  (NNW)    276 mstly clr    none 
     04:00    53    18      9   280    (W)    258 mstly clr    none 
     05:00    49    19      7   321   (NW)    317 mstly clr    none 
     06:00    51    20      8   288  (WNW)    350 mstly clr    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