Subject: 3.5m Night Log 20211218
From: dembicky@apo.nmsu.edu
Date: Sun, 19 Dec 2021 13:01:56 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, December 18, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS03  D.Gies            K.Shepard
UW01  S.Hawley          S.Kanodia
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS03  ECHELLE        --:--   --:--
UW01  ARCTIC         02:50   06:00
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS03/R      17:09  22:50    0   5.7   0    0   0.0  0.0   0    0
UW01/R      22:50  06:52    0   4.0   0    0   0.0  4.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
Clouds and humidity kept us closed until around 02:50.
At the very end of the night ARCTIC lost the filter wheel, display ?, when the observer went to do dome cals and move the filter. It was working fine the entire night.  I did not move the instrument except when I rotated it to 0 mount.  Homing the wheel fixed the issue.
                    ------- 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
--------------------------------------------------------------------------
 03:06 arctic   190(  362) 243  39  -2.1 -2.0 -0.7 -3.2 -2.8   SDSS_i  1.22
 03:09 NA2gdr   534(37534) 243  39  -2.4 -2.0 -0.8 -3.2 -2.8   R  1.58
 03:47 arctic   228(  335) 222  47  -2.5 -3.2 -1.7 -3.4 -3.2   SDSS_i  1.32
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    30    21      1   219   (SW)    639   cloudy     none
     17:00    25    14      4   345  (NNW)   1024   cloudy     none
     18:00    27    20      2    17  (NNE)          cloudy     none
     19:00    27    24      3   286  (WNW)          cloudy    humid
     20:00    26    24      7   355    (N)          cloudy   lt snow
     21:00    26    23      1   301  (WNW)          cloudy   lt snow
     22:00    27    24      1   199  (SSW)          cloudy    humid
     23:00    23    18      3   350    (N)          cloudy    humid
     00:00    23    20      7    88    (E)         ptly cldy  humid
     01:00    24    22      2   213  (SSW)         ptly cldy  humid
     02:00    24    19      4   353    (N)         ptly cldy   none
     03:00    28    15      5   359    (N)    232 mstly clr    none
     04:00    28    15      2    62  (ENE)    153 mstly clr    none
     05:00    29    16      2   232   (SW)    147    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