Subject: 3.5m Night Log 20181212
From: mcmillan@apo.nmsu.edu
Date: Thu, 13 Dec 2018 11:58:55 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, December 12, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
T.Murphy          R.McMillan            APOLLO         17:04   18:08
S.Bhatiani        S.Bhatiani            NICFPS         18:12   20:45
M.Graham          E.Bellm               DIS            --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
AP01/O     17:07   18:07    0    0    0    0   0.0  1.0   0    0
OU04/R     18:07   00:10   2.2  1.2   0    0   0.0  2.6   0    0
UW05/R     00:10   06:48   6.6   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Weather was unstable, with clouds and borderline humidity before sunset, and then a period of mostly clear skies and surprisingly decent seeing, before the clouds came back and the humidity went up and radar signals started to menace us from the north.  A little while after I closed, the wind went over the limit and it started to snow.  For the rest of the night we had intermittent snowflakes, consistent high wind, and usually high humidity.  The snow was barely beginning to stick before morning.  Because of the wind, I did not run the snow program, but I did change dome azimuth during a couple of periods when the gusts were not too high.
I took the opportunity to work on the DIS focus with the instrument cold, since my previous adjustment was made during the afternoon and perhaps not respresentative of nighttime conditions.
                    ------- 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
--------------------------------------------------------------------------
 17:41 APOLLO     754( 1446)  46  66   1.0  1.9  2.4  1.8  1.4   530  1.00
 18:25 NICFPS     872( 1135) 156  52   0.9  1.1  1.8  1.2  0.9   H  0.81
              ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    35    31     19   278    (W)    116   cloudy     none
     17:00    35    30     18   263    (W)        mstly clr    none
     18:00    34    28     18   262    (W)        mstly clr    none
     19:00    33    27     16   265    (W)         ptly cldy   none
     20:00    32    27     16   241  (WSW)        mstly cldy   none
     21:00    30    27     20   266    (W)        mstly cldy   none
     22:00    29    26     12   265    (W)          cloudy     none
     23:00    29    24     29   281    (W)          cloudy   lt snow
     00:00    23    21     23   307   (NW)          cloudy   lt snow
     01:00    18    13     24   345  (NNW)          cloudy     none
     02:00    16     8     14   284  (WNW)          cloudy   lt snow
     03:00    16     6     13   292  (WNW)    244   cloudy     none
     04:00    15    11     27     4    (N)          cloudy     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.
                          TELESCOPE STATUS
    Telescope drives operational. Current TCC version: 1.2.4
    Current TUI version: 2.6.0