Subject: 3.5m Night Log 20170821
From: mcmillan@apo.nmsu.edu
Date: Tue, 22 Aug 2017 11:02:48 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Monday, August 21, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
A.Mukadam         A.Kosakowski,         DIS            20:25   23:10
                  A.Mukadam             Agile          23:15   00:15
                                        Agile          01:20   03:45
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW09/R     19:50   06:23   3.7   0    0    0   6.7  0.1   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
We battled bouncing humidity for most of the night, opening partway through twilight and then closing a couple of times for wetter parts of the night.  It was still much better weather than I expected.  Seeing was poor first half and better second half (the focus recording script had trouble so I had to fill in some numbers by hand).
Despite passing checkout in the afternoon, the agile rotator had multiple motion errors when tracking from -45 to -70, an area where I thought it was normally pretty happy.  It only took a few seconds to recover each time, though, so it wasn’t a significant time loss.
                    ------- 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
--------------------------------------------------------------------------
 20:29 dcamera    550( 1157) 105  34  13.1 17.3 16.2 17.6 14.7   -  2.08
 23:20 agile      450                                           BG40 1.82
 00:25 agile      475                                           BG40 1.03
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    59    54      6   249  (WSW)    175  ptly cldy   none
     17:00    61    52     12   215   (SW)    156  ptly cldy   none
     18:00    63    55     12   239  (WSW)    133  ptly cldy   none
     19:00    58    53      8   205  (SSW)        mstly clr   humid
     20:00    55    50      7   194  (SSW)    127    clear    humid
     21:00    56    48      7   189    (S)           clear    humid
     22:00    55    48      9   183    (S)           clear    humid
     23:00    55    50      9   184    (S)           clear    humid
     00:00    53    50      7   187    (S)           clear    humid
     01:00    55    51      4   192  (SSW)           clear    humid
     02:00    56    47      2   239  (WSW)           clear     none
     03:00    57    43      3   261    (W)    120    clear     none
     04:00    53    51      4   243  (WSW)           clear    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: 2.6.0