Subject: 3.5m Night Log 20160409
From: mcmillan@apo.nmsu.edu
Date: Sun, 10 Apr 2016 12:01:25 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, April 09, 2016
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
T.Murphy          R.McMillan            APOLLO         19:35   20:35
C.Churchill       C.Churchill           DIS            20:40   01:05
T.Thuan           Y.Izotov              DIS            01:10   04:45
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
AP01/O     19:38   20:38    0    0    0    0   0.0  1.0   0    0
NM02/R     20:38   01:10    0    0    0    0   2.8  1.8   0    0
UV02/R     01:10   06:31    0    0   1.8   0   3.5  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
The night was photometric with moderate seeing to start, then very good seeing, and then some thin clouds moved in at the end.
Everything was working well until I started seeing some unfamiliar error messages which I thought indicated a guider problem.  When the observer finished his exposure and wanted to move to another target, it turned out the problem was with TCC communication to the rotator, or maybe communication to all axes.  It was still possible to talk to all axis controllers through another method, and they all looked fine.  I tried restarting some software, and in the process I also managed to make the secondary mirror controller upset.  When it was getting close to twilight and I hadn't figured out the first problem, much less the secondary problem, I decided it was time to call it a night.  Hopefully someone else can understand what went wrong.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
UV02    D        T/S       04:45  06:31   TCC communication to axes failed
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 19:30 APOLLO     698( 1640)  67  50   8.1 10.4 10.1 10.6  9.5   530  1.10
 20:51 dcamera    611(  527) 125  68   7.9  8.2  8.7  8.2  7.7   -  1.13
 01:15 dcamera    541(  425) 240  56   7.8  7.4  8.0  7.5  7.4   -  0.93
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    50    27     10   303  (WNW)    979    clear     none
     17:00    51    28     20   237  (WSW)    910    clear     none
     18:00    50    30     13   250  (WSW)    941    clear     none
     19:00    49    29     19   205  (SSW)    880    clear     none
     20:00    46    24     15   223   (SW)    859    clear     none
     21:00    46    24     17   239  (WSW)    893    clear     none
     22:00    47    23     14   232   (SW)    796    clear     none
     23:00    47    24     13   242  (WSW)    871    clear     none
     00:00    47    24     11   218   (SW)    819    clear     none
     01:00    46    19     13   203  (SSW)    754    clear     none
     02:00    46    18     17   220   (SW)    920    clear     none
     03:00    46    18     17   235   (SW)    995    clear     none
     04:00    46    18     14   234   (SW)    984 mstly clr    none
     05:00    45    19     10   266    (W)   1007  ptly cldy   none
     06:00    44    18     10   264    (W)    892  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: 2.5.1