Subject: 3.5m Night Log 20180228
From: trudyk@apo.nmsu.edu
Date: Thu,  1 Mar 2018 13:06:53 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, February 28, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
B.Ketzeback       R.Mcmillan,T.Rudyk    ARCTIC         03:15   05:30
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
EN01/R     18:08   06:23    0   9.9  0    0   0.0  2.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Evening started with clouds and snow.  Even before the snow finished falling, fog descended.  Performed numerous tests on arctic filter wheel, but could not consistently get and error. Humidity and clouds passed around 3:00. We opened, but winds were borderline and the seeing was terrible.  On a hunch, decided to use arctic on the sky and then started getting numerous filter wheel errors.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   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    25    24     26   266    (W)          cloudy   lt snow
     17:00    24    18     27   276    (W)          cloudy     snow
     18:00    23    14     13   279    (W)    592   cloudy     none
     19:00    21    17     15   272    (W)   3800   cloudy   lt snow
     20:00    22    21     16   315   (NW)          cloudy     fog
     21:00    22    22     11   352    (N)          cloudy     fog
     22:00    22    21      6   358    (N)          cloudy     fog
     23:00    22    20     10   356    (N)          cloudy    humid
     00:00    21    20     13    27  (NNE)          cloudy    humid
     01:00    20    18     24    22  (NNE)          cloudy    humid
     02:00    22    16     17    30  (NNE)          cloudy    humid
     03:00    24    12     28    23  (NNE)    437   cloudy    humid
     04:00    25     6     26    67  (ENE)    977   cloudy     none
     05:00    24     8     19    58  (ENE)    621   cloudy     none
     06:00    24     7     18    73  (ENE)    617   cloudy     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 STATUS
    Telescope drives operational. Current TCC version: 1.2.4
    Current TUI version: 2.6.0