Subject: 3.5m Night Log 20190810
From: trudyk@apo.nmsu.edu
Date: Sun, 11 Aug 2019 12:28:48 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, August 10, 2019
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
G.Wallerstein     I.Farrel              DIS            20:02   00:55
M.Brotherton      A.Cavanaugh           TSPEC          01:08   02:00
M.Brotherton      A.Cavanaugh           TSPEC          03:18   06:04
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW10/R     20:02   01:10    0    0    0    0.4 0.0  4.7   0    0
WY02/R     01:10   06:15    0    1.3  0    0   3.3  0.5   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Weather started off a bit iffy, with what looked like rain headed our way. The rain dissipated, and we had a surprisingly long stretch of clear skies. Seeing was so-so. Telescope gave us some problems, possibly wind related, but we were not able to reach an absolute conclusion. Around 02:00 a fast-moving system of rain appeared on the radar, headed for us. We closed for a little over an hour as a precaution. The rain did not make it to us, and we opened again at 03:18. We stayed open until dawn after that.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
uw10   D         T/H      21:54   22:18   Scope had trouble tracking in alt
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 20:27 dcamera    592( 1256) -95  52  15.7 18.9 18.9 18.3 16.2   -  1.51
 22:15 dcamera    564( 1063) -55  55  15.1 15.4 16.0 15.1 15.2   -  1.23
 01:25 tcamera    524( 1214) -25  62  14.8 14.7 15.2 14.7 14.8  Ks  1.39
           ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    71    53     20   213  (SSW)    381  ptly cldy   none
     17:00    69    51     18   186    (S)    402  ptly cldy   none
     18:00    66    50     10   215   (SW)    449  ptly cldy   none
     19:00    65    55     12   210  (SSW)    481  ptly cldy   none
     20:00    61    55     10   189    (S)    433  ptly cldy   none
     21:00    60    54     12   192  (SSW)    421  ptly cldy   none
     22:00    59    51     13   193  (SSW)    231 mstly clr    none
     23:00    59    51      4   192  (SSW)    281 mstly clr    none
     00:00    59    49     13   214   (SW)    147 mstly clr    none
     01:00    59    48      8   212  (SSW)    116 mstly clr    none
     02:00    59    49      7   232   (SW)    108 mstly cldy   none
     03:00    59    48     12   214   (SW)    107 mstly clr    none
     04:00    60    49     10   189    (S)    194 mstly clr    none
     05:00    59    50     15   198  (SSW)    153 mstly clr    none
     06:00    58    50     14   196  (SSW)    155 mstly clr    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