Date: Fri, 2 Apr 2010 02:49:42 -0600 (MDT)
Subject: 3.5m Night Log 20100401
From: "Jack Dembicky"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Thursday April 01, 2010
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 S.Schmidt     S.Schmidt               TSPEC          --:--  --:--
 S.Kent        B.Yanny,B.Willet        DIS            --:--  --:--
  PROG        SCHEDULED      WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH    D    B    D    B    D    B    D    B
 ------------------------------------------------------------------
 UW06/R     19:32  01:10    3.1  2.5   0    0    0    0    0    0
 UC03/R     01:10  06:42     0   5.5   0    0    0    0    0    0
   note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
 Clouds and dust at the start of the night, a short clearing, but still dusty and then more clouds
came in.  By around midnight it was snowing and the outside temp had dropped significantly.
I took some DIS linearity data for Joe tonight using suggestions Holtzman proposed during out
tech-o-con this afternoon.
I gave up around 2:30 since we had a good dusting of snow on the ground and winds that would blow
it into the dome if we could have opened.  Radar was showing more precip on the way and it was
lightly snowing outside as well.
                ------------- FAILURE LOG --------------
  PROG   INST   FAILURE MODE     TIME
      (STEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------------
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    49    19     30   253  (WSW)  28894 mstly cldy   dust
     17:00    41    23     24   279    (W)  26999 mstly cldy   dust
     18:00    40    22     25   263    (W)  10607 mstly cldy   dust
     19:00    38    23     21   259    (W)   6170  ptly cldy   dust
     20:00    33    21     21   266    (W)   6297   cloudy     none
     21:00    31    21     22   294  (WNW)   3818   cloudy     none
     22:00    29    18     24   289  (WNW)   2353   cloudy     none
     23:00    29    16      9   295  (WNW)   1254   cloudy   lt snow
     00:00    28    15     16   257  (WSW)   1477   cloudy     snow
     01:00    25    19     13   291  (WNW)   1933   cloudy     snow
     02:00    22    19     11   296  (WNW)   2889   cloudy   lt snow
     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: 2.11.1
      Current TUI version: 1.7.1