Subject: 3.5m Night Log 20171107
From: cgray@apo.nmsu.edu
Date: Wed,  8 Nov 2017 11:52:53 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, November 07, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
M.Bentz           M.Bentz               DIS            --:--   --:--
M.Klaene          R.McMillan, C.Gray    DIS            --:--   --:--
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
GS01/R     17:16   18:16  1.0  0.0   0    0    0    0    0    0
EN01/R     18:16   06:19  2.4  9.6   0    0    0    0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
gcam and ecam needed a hub restart at checkout.
The weather was cloudy and wet all night.  There was no hope of opening.
For engineering, zeroed the rotator (-0.215 offset) and reset the axes controllers. I ran dis through a ton of rotation angles and changed the gratings back and forth between bays 1 and 2 in an attempt to isolate why we sometimes have a misalignment.  Based on tonights work, misalignments seemed to be triggered at angle -90, but not all the time, and I only saw it occur with grating 1.  The detent numbers count up with each motion of the grating turret but when the value drops below the previous detent value that seems to indicate a misalignment.
I wrote engineering as lost due to weather since we did not open, even though I was working with DIS.
                    ------- 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 F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    48    32     12   216   (SW)    116   cloudy     none
     17:00    47    32      8   213  (SSW)    146   cloudy     none
     18:00    46    33     14   225   (SW)    155   cloudy     none
     19:00    46    33      8   252  (WSW)    166   cloudy     none
     20:00    46    33     14   266    (W)    160   cloudy   lt rain
     21:00    46    33     18   266    (W)    155   cloudy   lt rain
     22:00    45    32     13   283  (WNW)    293   cloudy    humid
     23:00    44    31     15   266    (W)    156   cloudy   lt rain
     00:00    40    36     13   263    (W)    396   cloudy     rain
     01:00    38    38     12   279    (W)          cloudy     rain
     02:00    37    37      9   290  (WNW)          cloudy     rain
     03:00    37    37      9   295  (WNW)          cloudy     rain
     04:00    36    35      9   284  (WNW)          cloudy     rain
     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