Subject: 3.5m Night Log 20250821
From: tsutherland@apo.nmsu.edu
Date: Fri, 22 Aug 2025 12:02:23 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, August 21, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW02  B.Benda           B.Benda
NM05  K.Sanderson       K.Sanderson
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW02  ECHELLE        19:55   01:04
NM05  KOSMOS         01:10   05:39
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW02/R      19:50  01:10    0    0    0    0   5.3  0.0   0    0
NM05/R      01:10  06:23    0    0    0    0   4.6  0.6   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Sutherland
Motion error in alt at 46.4 deg moving down to 36.9deg at 01:12am.
Overall a quiet night with good weather and no real problems (Arcsat notwithstanding).
                    ------- 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
--------------------------------------------------------------------------
 20:48 ecamera    583(  418) -57  59  14.8 15.6 16.1 15.1 14.7   clear  1.86
 22:00 ecamera    496(  275) -76  45  14.2 14.2 14.8 13.8 13.9   clear  1.72
 01:29 kosmos   550( 1274)  44  40  13.7 12.9 13.5 12.9 13.2   --  3.35
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    64    53      3   261    (W)   1421  ptly cldy   none
     17:00    64    52      4   263    (W)   1268  ptly cldy   none
     18:00    66    46      5   119  (ESE)   1155  ptly cldy   none
     19:00    63    50      0   195  (SSW)   1246 mstly clr    none
     20:00    60    46     16    80    (E)   1288 mstly clr    none
     21:00    58    45     12    80    (E)   1301 mstly clr    none
     22:00    58    43     16    86    (E)   1136    clear     none
     23:00    58    42     18    78  (ENE)   1086    clear     none
     00:00    57    42     15    90    (E)    971    clear     none
     01:00    56    44     14    97    (E)   1441    clear     none
     02:00    56    43     14    84    (E)   1321    clear     none
     03:00    56    42     15    81    (E)   1287    clear     none
     04:00    55    42     12    91    (E)   1237    clear     none
     05:00    56    41     15    68  (ENE)   1117    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