Subject: 3.5m Night Log 20170214
From: trudyk@apo.nmsu.edu
Date: Wed, 15 Feb 2017 11:59:19 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, February 14, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
V.Meadows         J.L.Yaeger,G.Arney    NICFPS         --:--   --:--
L.Hebb            L.Hebb                Echelle        01:18   02:58
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW04/R     17:57   19:57   2.0   0    0    0   0.0  0.0   0    0
UW09/R     19:57   06:38   1.6  7.4   0    0   0.0  1.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Night started out cloudy with light snow.  Snow passed, only high humidity remianed.  By 20:00 it had cleared, but with 90% humidity we could not yet open.  Humidity dropped to 80% with a downward trend at around 01:10 so we opened.  Seeing was bad, we had trouble guiding.  Guiding got worse as the winds rose.  At 03:00 I checked outside, and found copious amounts of snow blowing in the wind.  Immediately went up and shut down the telescope, though there is a good chance the mirror got some snow. Winds began to exceed 35 mph.  We stayed closed the rest of the night, the observer logged off. I checked the mirror during fills, some of the mirror covers had snow on them, but no snow appears to have stuck to the mirror itself. Scope was left parked at 0,10.  Also note S.Schmidt observed for UW04 program, was not able to fit his name on the observer column above.
                    ------- 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
--------------------------------------------------------------------------
 01:08 ecamera    937( -898)  47  67  -7.8 -5.5 -3.5 -5.8 -6.1   ND3  2.50
------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    25    24      5   357    (N)          cloudy   lt snow
     17:00    23    22      8    63  (ENE)          cloudy    humid
     18:00    23    22      5    81    (E)          cloudy    humid
     19:00    22    21      8    60  (ENE)         ptly cldy  humid
     20:00    21    20      8    61  (ENE)        mstly clr   humid
     21:00    21    18     10     7    (N)        mstly clr   humid
     22:00    20    17      6     5    (N)        mstly clr   humid
     23:00    18    17      4   291  (WNW)        mstly clr   humid
     00:00    18    15      3   300  (WNW)        mstly clr   humid
     01:00    18    14      8   147  (SSE)        mstly clr    none
     02:00    18    14     17    51   (NE)         ptly cldy   none
     03:00    19    14      8    97    (E)         ptly cldy   none
     04:00    19    13     28    69  (ENE)         ptly cldy   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: 1.2.2
    Current TUI version: 2.6.0