Subject: 3.5m Night Log 20170527
From: cgray@apo.nmsu.edu
Date: Sun, 28 May 2017 10:45:19 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, May 27, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
A.Mukadam         A.Mukadam             Agile          20:12   21:43
                                        Agile          22:02   01:09
E.Bellm           E.Bellm               DIS            01:13   04:18
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW10/R     20:12   01:10    0   0.3   0    0   2.9  1.8   0    0
UW02/R     01:10   05:48   1.5   0    0    0   3.1  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
Agile had rotation motion errors during the beginning of the night even though we were never near the rotation limit and it showed no signs of problems during check out.  It never broke free but did motion error several times so I zeroed the rotator and the problem only occurred once more at 23:37.  We were closed about 20min while I reset the rotator.
We had clear skies with good seeing nearly all night until...a huge spike in humidity walloped up near dawn.  We had to close rather quickly as were not able to reopen.
09:43 - 22:02
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
UW01   G         I/H      21:43   22:02   Agile rotator failure
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 19:49 AGILE      653( -976)  12  78  14.1 14.3 14.8 14.0 14.0   BG40  1.52
 00:17 dcamera    573(  916) -94  81  13.0 12.8 13.4 12.7 12.7   --  1.00
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    63    20     17   266    (W)    755    clear     none
     17:00    65    20     25   264    (W)    729    clear     none
     18:00    64    18     25   252  (WSW)    799    clear     none
     19:00    61    16     21   256  (WSW)    940    clear     none
     20:00    58    13     14   266    (W)    905    clear     none
     21:00    58    13     17   265    (W)    811    clear     none
     22:00    57    14     17   262    (W)    768    clear     none
     23:00    57    12     13   271    (W)    898    clear     none
     00:00    56    12     11   271    (W)    800    clear     none
     01:00    55    11      1   193  (SSW)    764    clear     none
     02:00    54     9     14     9    (N)    711 mstly clr    none
     03:00    56    11     14    63  (ENE)    574 mstly cldy   none
     04:00    42    29     27    77  (ENE)   2013 mstly cldy  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