Subject: 3.5m Night Log 20170427
From: trudyk@apo.nmsu.edu
Date: Fri, 28 Apr 2017 12:29:43 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, April 27, 2017
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
A.Verbiscer       A.Verbiscer           ARCTIC         19:51   20:35
M.Prescott        A.Hall                ARCTIC         02:45   05:37
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UV02/R     19:51   01:10    3.8  0.8  0    0   0.0  0.7   0    0
NM06/R     01:10   06:10    2.1  0    0    0   2.9  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: T.Rudyk
Evening started out partly cloudy but with increasing clouds, winds and dust.  By 18:00 winds were topping 35mph, we did not do slew tests.
The wind and dust became borderline around sunset, and given the target was facing downwind, we opened.  Clouds proved to be very thick, though. We could not find any stars, and closed again to wait out the clouds. Starting around 22:00 dust levels shot up quite high. About 02:00 El Paso became visible again, heralding clearer air. We opened at 02:45. Unfortunately, bands of clouds began to pass, making observing difficult at times. We powered through it, and closed as dawn approached.
                    ------- 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
--------------------------------------------------------------------------
 02:58 arctic   692(  794) -83  67   8.2  8.8  9.6  9.0  8.6   Wash-C  1.67
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    59    25     27   255  (WSW)   2777  ptly cldy   none
     17:00    58    24     22   225   (SW)   4045  ptly cldy   dust
     18:00    57    24     21   259    (W)   3935 mstly cldy   dust
     19:00    54    21     35   254  (WSW)   3545 mstly cldy   none
     20:00    53    22     27   259    (W)   2710 mstly cldy   none
     21:00    52    22     24   272    (W)   2289 mstly cldy   none
     22:00    51    22     20   268    (W)   8991 mstly cldy   dust
     23:00    51    24     28   276    (W)  47748 mstly clr    dust
     00:00    50    25     22   255  (WSW)  38228 mstly clr    dust
     01:00    49    25     21   245  (WSW)  50840 mstly clr    dust
     02:00    47    26     15   265    (W)  10495 mstly clr    dust
     03:00    47    26     18   267    (W)   2875  ptly cldy   none
     04:00    46    27     19   239  (WSW)   2413  ptly cldy   none
     05:00    45    28     20   229   (SW)   2165  ptly cldy   none
     06:00    44    29     24   268    (W)   2067  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