Subject: 3.5m Night Log 20170425
From: trudyk@apo.nmsu.edu
Date: Wed, 26 Apr 2017 10:35:56 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Tuesday, April 25, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
S.Mahadevan       G.Stefansson          ARCTIC         00:54   02:10
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
DD02/R     19:49   06:12    8.1  0    0    0   2.3  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
High dust and winds plagued us at the start.  We were not able to do slew tests on account of the wind. High dust and winds plagued us until 23:00, when they started to drop off.  About 23:15 we heard what seemed to be thunder, and smelled rain on the air, this coupled with radar returns kept us closed. Around 01:00 things got better. Dust, wind and humidity dropped.  S.Tuttle fell ill, so DD02 took over UW06's shift. A patch of precispitation appeared on the radar closing fast, so we closed at 02:10. Even after the echoes passed, it remained too cloudy to open.  DD02 called it by 4:00, the transit egress having passed. There were no observerd brownouts or power failures 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
--------------------------------------------------------------------------
 01:11 arctic   681(  583) 123  37   1.1  4.6  6.7  4.3  3.4   SDSS-r  1.87
           ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    51    25     32   252  (WSW)   4933 mstly cldy   dust
     17:00    52    26     24   248  (WSW)   7394 mstly cldy   dust
     18:00    51    25     38   284  (WNW)   3680 mstly cldy   dust
     19:00    48    26     36   282  (WNW)   3453 mstly cldy   dust
     20:00    47    27     31   272    (W)   2982 mstly cldy   dust
     21:00    46    27     20   267    (W)   6789 mstly cldy   dust
     22:00    44    26     26   294  (WNW)   7158 mstly cldy   dust
     23:00    39    30     17   337  (NNW)   6174 mstly cldy   none
     00:00    36    30     11   359    (N)   2175  ptly cldy   none
     01:00    34    25     31   348  (NNW)   1501  ptly cldy   none
     02:00    34    21     12    26  (NNE)   1141 mstly cldy   none
     03:00    33    16      9   339  (NNW)    629 mstly cldy   none
     04:00    32    17     18     9    (N)    568 mstly 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