Subject: 3.5m Night Log 20151116
From: mcmillan@apo.nmsu.edu
Date: Tue, 17 Nov 2015 12:05:33 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, November 16, 2015
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
S.Anderson        J.Ruan                DIS            --:--   --:--
E.Friel           J.Overbeek            ECHELLE        --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW03/R     17:10   00:10   2.5  4.5   0    0   0.0  0.0   0    0
DD02/R     00:10   06:26   6.3   0    0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Cloudy and humid all night, with sleet and graupel for a few hours in the evening. I did some more analysis of the ARCTIC bias issue, which is improved but not eliminated by having the chip temperature regulated.  Tonight was a good night to regulate the temperature, since the ambient temps dropped precipitously.  Nothing broke in the cold, partly because I wasn't comfortable running all parts in bad weather conditions.
I parked the telescope facing south for maximum insolation during the day, and that should be enough to clear the ice from the dome.
                    ------- 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    25    24     29   287  (WNW)   5915   cloudy    humid
     17:00    20    19     26   274    (W)    507   cloudy   lt snow
     18:00    18    16     26   253  (WSW)    328   cloudy   lt snow
     19:00    17    16     23   276    (W)    640   cloudy   lt snow
     20:00    17    15     15   268    (W)   1180   cloudy   lt snow
     21:00    16    15     17   299  (WNW)    954   cloudy    humid
     22:00    17    15     10   292  (WNW)   1187   cloudy    humid
     23:00    17    15     24   296  (WNW)    804   cloudy    humid
     00:00    16    15     19   284  (WNW)    786   cloudy    humid
     01:00    17    15     18   289  (WNW)    649   cloudy    humid
     02:00    17    15     20   270    (W)    589   cloudy    humid
     03:00    18    15     20   276    (W)   6352   cloudy    humid
     04:00    18    15     23   303  (WNW)   4595   cloudy    humid
     05:00    18    16     23   324   (NW)    272   cloudy    humid
     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: 2.5.0