Subject: 3.5m Night Log 20180524
From: cgray@apo.nmsu.edu
Date: Fri, 25 May 2018 11:48:40 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, May 24, 2018
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
E.Dahl            E.Dahl, R.Hull        NAIC           20:10   05:15
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
NM01/R     20:10   01:10    0    0    0    0   0.0  5.0   0    0
NM01/R     01:10   05:50    0    0    0    0   2.0  2.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: C.Gray
OMG, it's so nice to be back up at the observatory with the smell of grease, oil, and pine and away from crowds, conferences, and the smell of fatigue! Plus, it was a great night. Seeing was good all night and the clouds were barely present.  However, a moth may have been present within the instrument.  We saw strange scattered light randomly with NAIC and nothing we did helped.  It happened only a few times and was not repeatable with wavelength, rotation, exposure time, and moon position didn't matter.  The best thing I could figure is that there were fast light changes between exposures that wasn't due to clouds, seeing, or the telescope and that pointed to something moving quickly inside the instrument (moth).
I did notice oscillation in the azimuth at az 14, 316, 304
The NAIC team is pretty tired so they left the instrument mounted and went to bed.  They will unmount in the afternoon and then leave site.
No problems tonight.
                    ------- 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
--------------------------------------------------------------------------
 19:54 naic   320( 1583)  -3  73  16.4 17.9 17.8 17.4 16.7   --  0.80
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    71    28     14   269    (W)   1707    clear     none
     17:00    70    26      9   252  (WSW)   1638    clear     none
     18:00    66    24      4   284  (WNW)   1847    clear     none
     19:00    68    25     12   227   (SW)   1839    clear     none
     20:00    62    20      9   262    (W)   1745    clear     none
     21:00    62    18      8   222   (SW)   1923    clear     none
     22:00    61    17     11   233   (SW)   1534    clear     none
     23:00    57    15      3   190    (S)   1749    clear     none
     00:00    60    17     12   228   (SW)   1932    clear     none
     01:00    59    17      5   208  (SSW)   1938    clear     none
     02:00    59    16      9   212  (SSW)   2075 mstly clr    none
     03:00    58    16     13   232   (SW)   2075 mstly clr    none
     04:00    59    16      8   253  (WSW)   1894 mstly clr    none
     05:00    58    15      6   260    (W)   1926 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