Subject: 3.5m Night Log 20170704
From: trudyk@apo.nmsu.edu
Date: Wed,  5 Jul 2017 11:53:27 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, July 04, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
J.Bally           J.Bally               NICFPS         20:27   01:04
D.Chojnowski  G.Stefansson,J.Wisniewski ARCTIC         04:30   05:24
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
CU06/R     20:24   01:10    0    0    0    0   0.0  4.8   0    0
NM03/R     01:10   05:52    1.0  2.4  0    0   1.3  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Evening started out clear with decent seeing. About midnight, clouds began to roll in.  They did not stick around, but the wind increased, and dust became an issue shortly after 01:00. Around 02:30 rain echoes were seen on the radar headed toward the site, so we remained closed. At 02:45 humidity, wind and dust all spiked. Around 04:30 humidity rapidly dropped, and dust counts were just under the threshold (and dropping), so we opened. We ran under it got too bright out. No failures, but during taking flats during the bad weather, the arctic filter wheel was not turning to the proper position, even after a home command.  It was fixed by physically removing the FW and re-seating it, then issuing a home command.
                    ------- 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
--------------------------------------------------------------------------
 20:37 NICFPS     484( 1808)  54  13  19.0 21.2 21.9 21.2 20.5   Fe1.64  2.76
 20:51 NICFPS     503( 1790) 109  38  18.7 20.9 21.3 20.4 20.1   Fe1.64  0.98
 21:46 NICFPS     519( 1727) 120  35  18.5 19.3 19.9 19.0 18.8   H2-2.12  1.07
 23:29 NICFPS     563( 1730)  18  35  18.5 18.6 19.2 18.6 18.7   H2-2.12  0.85
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    70    34      8    89    (E)    683  ptly cldy   none
     17:00    73    31     11   297  (WNW)    754  ptly cldy lt rain
     18:00    73    31      5   235   (SW)    766  ptly cldy   none
     19:00    69    33     19    72  (ENE)    779  ptly cldy   none
     20:00    69    32      7   194  (SSW)    737    clear     none
     21:00    65    34     11   132   (SE)    635    clear     none
     22:00    65    33     20   125   (SE)    813    clear     none
     23:00    66    31     14   128   (SE)    720    clear     none
     00:00    64    32     14    84    (E)    669  ptly cldy   none
     01:00    57    42     23    81    (E)   3226  ptly cldy   dust
     02:00    57    43     22   126   (SE)   4374  ptly cldy   dust
     03:00    52    48     22    83    (E)         ptly cldy  humid
     04:00    51    47     11   121  (ESE)         ptly cldy  humid
     05:00    55    44     19   131   (SE)   1756  ptly cldy   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: 1.2.2
    Current TUI version: 2.6.0