Subject: 3.5m Night Log 20201027
From: trudyk@apo.nmsu.edu
Date: Wed, 28 Oct 2020 10:14:03 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, October 27, 2020
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
CU02  Z.Berta-Thompson  J.Libby-Roberts
AP01  T.Murphy          R.McMillan
NM04  E.Nielsen         E.Nielsen
                         ACTUAL
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
CU02  ARCTIC         --:--   --:--
AP01  APOLLO         --:--   --:--
NM04  ECHELLE        --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
CU02/R      18:25  00:10    0    5.8  0    0   0.0  0.0   0    0
AP01/R      00:10  01:10    0    1.0  0    0   0.0  0.0   0    0
NM04/R      01:10  07:10    2.5  3.5  0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Evening started with sporatic snow and fog. Fog got very thick by 20:00. Snow started around 22:45. Snow never really became heavy, but I ran the snow program anyway, just in case, starting at 23:00. Fog and very light snow the rest of the night. Gave up around 04:00. Scope was left pointing south to melt any remaining ice from yesterday. We did not open at all.
                    ------- 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
--------------------------------------------------------------------------
           ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    29    28      3   196  (SSW)         ptly cldy lt snow
     17:00    20    20      2   199  (SSW)         ptly cldy   fog
     18:00    23    23      5   194  (SSW)         ptly cldy   fog
     19:00    18    18      4   249  (WSW)          cloudy     fog
     20:00    20    19      2   197  (SSW)          cloudy     fog
     21:00    20    19      2   232   (SW)          cloudy     fog
     22:00    20    18      5   260    (W)          cloudy     fog
     23:00    17    15      2   250  (WSW)          cloudy   lt snow
     00:00    17    15      6   344  (NNW)          cloudy   lt snow
     01:00    17    15      1   326   (NW)          cloudy     fog
     02:00    17    15      7   278    (W)          cloudy   lt snow
     03:00    16    14      4   268    (W)          cloudy   lt snow
     04:00    16    15      7   359    (N)          cloudy   lt snow
     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.
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