Subject: 3.5m Night Log 20171001
From: mcmillan@apo.nmsu.edu
Date: Mon,  2 Oct 2017 13:14:13 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Sunday, October 01, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
P.Gaulme          P.Gaulme,M.Benbakour  Echelle        19:30   22:56
J.Roberts         Z.Berta-Thompson,     ARCTIC         23:00   06:45
                  J.Roberts
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
NM02/R     18:56   23:00    0    0    0    0   0.0  4.1   0    0
CU02/R     23:00   06:50    0    0    0    0   3.1  4.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Nice weather!  Well, mostly.  There was a patch of clouds and borderline-high winds in the middle portion of the night, but for the most part it was clear with good seeing.
During first half, with the telescope in the northwestern sky, we had one problem with azimuth oscillations while tracking at 01:47 UT, and one problem with a motion error (az and alt) while slewing at 03:12 UT.  Both were solved by slewing away and slewing back; if there was a third incident I planned to go look for moth guts on the azimuth drive surface, but that didn't become necessary, and only a couple of minutes of time were lost.
                    ------- 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
--------------------------------------------------------------------------
 19:27 ecamera    376(  -60)  -8  50  12.7 13.9 14.2 13.7 13.1   ND1  0.96
 20:40 ecamera    294( -218) -145  77  12.6 12.7 13.2 12.4 12.4   ND1  0.72
 23:12 arctic   425(  927)  34  35  13.1 12.4 12.9 12.5 12.8   SDSS_i  1.18
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    59    43     17   218   (SW)           clear     none
     17:00    60    42     26   211  (SSW)           clear     none
     18:00    59    41     25   218   (SW)           clear     none
     19:00    55    40     21   224   (SW)           clear     none
     20:00    55    40     16   222   (SW)           clear     none
     21:00    55    40     17   221   (SW)           clear     none
     22:00    56    38     17   203  (SSW)        mstly clr    none
     23:00    56    37     20   214   (SW)         ptly cldy   none
     00:00    56    38     26   221   (SW)         ptly cldy   none
     01:00    55    37     23   219   (SW)         ptly cldy   none
     02:00    53    38     19   218   (SW)        mstly clr    none
     03:00    52    42     18   211  (SSW)           clear     none
     04:00    51    36     21   228   (SW)           clear     none
     05:00    50    34     17   231   (SW)           clear     none
     06:00    50    35     19   241  (WSW)           clear     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: 1.2.4
    Current TUI version: 2.6.0