Subject: 3.5m Night Log 20250803
From: mcroom@apo.nmsu.edu
Date: Mon, 04 Aug 2025 12:36:20 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, August 03, 2025
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
UW08  C.Chandler        C.Chandler,J.Davenport,D.Zhang
UW09  C.Chandler        C.Chandler,J.Davenport,D.Singh,D.Zhang
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
UW08  KOSMOS         20:40   01:05
UW09  ARCTIC         01:20   05:38
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
UW08/R      20:08  01:10    0    0    0    0   0.0  5.0   0    0
UW09/R      01:10  06:11    0    0    0    0   4.5  0.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: M.Croom
Remote and onsite support from Cary; remote support from Russet.
All-sky needed more than a software re-start at the beginning of the night. Cary
came back out and restarted the camera. Also, dataq was not running. The s/w
stop/start approach was successful.
Motion errors occurred in Alt while getting some standard stars at end of the KOSMOS
time (00:30). Took several slews / init / stop cycles to clear. Encountered mostly
while slewing downward, but occurred in both directions.
The weather conditions were good all night. No other telescope issues.
                    ------- 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
--------------------------------------------------------------------------
 21:05 kosmos   650( 1763)  -3  40  20.0 22.3 22.3 21.4 20.5   -  1.60
 02:04 arctic   534( 1657) -17  48  19.9 19.4 20.4 19.5 19.6   CUVR  1.27
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    76    43     23   263    (W)    991 mstly clr    none
     17:00    76    39     14   260    (W)    841 mstly clr    none
     18:00    73    35      7   275    (W)    763 mstly clr    none
     19:00    73    34      6   274    (W)    749 mstly clr    none
     20:00    70    30      3   271    (W)    734    clear     none
     21:00    68    27      3   312   (NW)    587    clear     none
     22:00    69    30      3   214   (SW)    649    clear     none
     23:00    70    29      5   214   (SW)    660    clear     none
     00:00    69    36      8   217   (SW)    867    clear     none
     01:00    69    35     10   183    (S)    858    clear     none
     02:00    68    33     11   182    (S)    872    clear     none
     03:00    65    36     10   151  (SSE)    868    clear     none
     04:00    67    27      6   188    (S)    708    clear     none
     05:00    68    22      8   184    (S)    622    clear     none
     06:00    67    23      5   181    (S)    645    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