Subject: 3.5m Night Log 20160107
From: dembicky@apo.nmsu.edu
Date: Fri,  8 Jan 2016 11:52:15 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, January 07, 2016
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
A.Truebenbach     A.Truebenbach         DIS            --:--   --:--
T.Thuan           T.Thuan               DIS            --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
CU08/R     17:21   00:10   6.8  0.0   0    0    0    0    0    0
UV05/R     00:10   06:58   5.4  1.4   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
I ran snow program all night.
Snow started falling around 19:00.  We had about 4-5 inches accumulation by around 05:00 with snow still falling and more on the radar headed this way.
At 04:00 I took some Arctic shutter tests (temp -5.4C).  These were with the instrument unmounted but pointing at the truss lamps.  30 exposures, Ne lamp on, 1 second exposures.  See artctic/shutter and arctic/bias files.  biases were taken in a dark dome.  The first biases with he incandescent lamps on had a gradient, probably the small light leak noted the other day.  Dark blackout cloth was not on the instrument tonight.  bias_light had the incandescent lamps on.
Catwalk cleared of snow @04:30 but more was falling.
Dome parked due south.
                    ------- 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 C Dewp C  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    28    24     21   218   (SW)   5056   cloudy    humid
     17:00    27    24     20   258  (WSW)   6889   cloudy    humid
     18:00    28    25     24   240  (WSW)  15236   cloudy    humid
     19:00    28    25     18   257  (WSW)   6449   cloudy     snow
     20:00    28    25     26   223   (SW)   1965   cloudy     snow
     21:00    28    25     31   213  (SSW)   1812   cloudy     snow
     22:00    26    24     21   225   (SW)   1096   cloudy     snow
     23:00    25    22     16   193  (SSW)    630   cloudy     snow
     00:00    24    21     12   246  (WSW)    559   cloudy     snow
     01:00    24    20      9   211  (SSW)    824   cloudy     snow
     02:00    24    20     17   211  (SSW)    264   cloudy     snow
     03:00    22    19     13   191    (S)    432   cloudy     snow
     04:00    22    19     12   218   (SW)    249   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: 1.0.4
    Current TUI version: 2.5.0