Subject: 3.5m Night Log 20210910
From: ajt@apo.nmsu.edu
Date: Sat, 11 Sep 2021 13:03:23 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Friday, September 10, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
BY03  B.Proudfoot        B.Proudfoot
UW06  T.Dorn-Wallenstein S.Hawley,L.Hebb
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
BY03  ARCTIC         19:19   01:10
UW06  ECHELLE        01:15   06:36
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
BY03/R      19:24  01:10    0    0    0    0   3.3  2.5   0    0
UW06/R      01:10  06:36    0    0    0    0   5.4  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
We had clear skies all night! The basin is hazy--maybe smoke, but our dust counts were not dangerously high tonight.
We had a minor power glitch around 21:30; the lights in the ops building flickered and the 3.5m telescope stopped tracking. We were still on utility power and neither the 2.5m or ARCSAT had any problems. We were able to recover quickly, and a re-inspection on the intermediate level showed nothing amiss there.
At the changeover I noticed the PMSS strip charts were not updating and restarted the Dataq to fix that.
At the end of the night, the mirror covers required a manual override to close.
                    ------- 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
--------------------------------------------------------------------------
 20:10 arctic   423( 1528)  73  37  16.0 17.7 17.9 16.9 16.4   SDSS_r  1.23
 01:25 ecamera    382(  257) -128  45  16.1 15.1 15.8 15.1 15.2   ND2  0.73
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    70    40      7   245  (WSW)   2356    clear     none
     17:00    69    37      8   246  (WSW)   2499    clear     none
     18:00    69    38      8   251  (WSW)   2363    clear     none
     19:00    64    38      4   169    (S)   2526    clear     none
     20:00    61    34      6   133   (SE)   2519    clear     none
     21:00    61    31      1   128   (SE)   2431    clear     none
     22:00    63    34      5   302  (WNW)   2487    clear     none
     23:00    61    33      7   217   (SW)   2343    clear     none
     00:00    60    33      5   191    (S)   2297    clear     none
     01:00    61    35      3   173    (S)   2399    clear     none
     02:00    61    36      2   215   (SW)   2664    clear     none
     03:00    61    36      3   217   (SW)   2510    clear     none
     04:00    60    35      4   221   (SW)   2116    clear     none
     05:00    59    32      3   227   (SW)   2058    clear     none
     06:00    60    32      6   231   (SW)   2024    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: 2.6.0