Subject: 3.5m Night Log 20161019
From: dembicky@apo.nmsu.edu
Date: Thu, 20 Oct 2016 11:30:19 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Wednesday, October 19, 2016
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
P.Gaulme          J.McKeever            Echelle        18:33   01:03
V.Woolf           V.Woolf               Echelle        01:06   03:20
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
NM03/R     18:33   01:10    0    0    0    0   3.2  3.4   0    0
UW09/R     01:10   07:03    0   3.7   0    0   0.0  2.2   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: J.Dembicky
I changed the Agile filter wheel back to the normal setup.
Seeing was around 1.3 arc sec at the start of the night.  Winds out of the East and the seeing became worse and variable.  By the start of second half is was 2.8 arc sec.  As the cold front came in, temps dropped and seeing went south (4+ arc sec)
Humidity started rising during 2nd half and eventually we needed to close around 03:20 due to humidity.  Fog formed overhead shortly thereafter and kept us closed the remainder of the night.  We gave up at 05:20.
                    ------- 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
--------------------------------------------------------------------------
 17:50 ecamera    786(  -63)  91  62  12.3 13.8 13.6 13.4 13.1   clear  1.34
 20:18 ecamera    761( -182) 242  51  11.8 11.8 12.4 11.6 11.6   clear  1.10
 00:07 ecamera    789( -329) 226  19   7.2  7.8  8.6  7.9  7.7   clear  2.80
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    57    21     10   294  (WNW)    597    clear     none
     17:00    56    19      1   206  (SSW)    847    clear     none
     18:00    55    17      1   212  (SSW)    981    clear     none
     19:00    54    21     10     6    (N)   1436    clear     none
     20:00    55    12     10    20  (NNE)   1124    clear     none
     21:00    53    14     16    73  (ENE)   1468    clear     none
     22:00    54     7     16    74  (ENE)   1117    clear     none
     23:00    47    18     19    74  (ENE)   1910    clear     none
     00:00    47    23     21    77  (ENE)   2233    clear     none
     01:00    45    24     12    90    (E)   2456    clear     none
     02:00    39    26     24    73  (ENE)   2692    clear     none
     03:00    36    32     22    71  (ENE)           clear    humid
     04:00    36    34     30    72  (ENE)           clear     fog
     05:00    36    34     22    77  (ENE)           clear     fog
     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: 2.5.1