Date: Wed, 9 Apr 2008 04:08:52 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20080408
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Tuesday, April 08, 2008
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 J.Hughes        J.Hughes                SPIcam        20:30   23:40
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 UW04/R     20:23  05:46   6.1  0.1   0    0   0.6  2.6   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialists: J. Dembicky
 Clouds moved in from the East around 23:30 and never left us for the
 remainder of the night.  The wind also picked up around 00:30 for about
 an hour or so.  Dust levels were elevated all night (3500-4500 cts)
 although I was open for the first half of the night as the dust levels
 seemed stable enough to open.  Louvers were closed all night and only
 press fans were turned on. The satellite looked promising for clear
 skies but the clouds didn't seem to go away and stayed overtop of us all
 2nd half.
 My observer called it a night at 03:45, as she needed at least 2hrs to
 get anything useful and we still had localized clouds overhead.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
      (SAEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
 -----------------------------------------------------------------------
 20:36 SPIcam     157(482)  32  53   7.8  9.6  9.9  8.8  8.1    R    0.9
 20:41 NA2gdr    30000(86)  29  53   7.9  9.4  9.8  8.6  8.1  clear  1.4
 22:02 SPIcam     350(589) -164 57   7.5  8.0  9.2  7.3  7.6    R    1.3
 22:21 NA2gdr 30000(-2290) -161 56   6.9  7.7  9.0  6.9  7.2  clear  1.6
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    54    12     18   223   (SW)   2729    clear     none
     17:00    52    17     20   205  (SSW)   2850    clear     none
     18:00    51    17     23   246  (WSW)   3396    clear     dust
     19:00    47    17     23   206  (SSW)   4505    clear     dust
     20:00    46    18     18   204  (SSW)   4179    clear     dust
     21:00    46    17     20   181    (S)   3847    clear     dust
     22:00    46    18     18   156  (SSE)   3798    clear     dust
     23:00    46    17     23   171    (S)   3731    cldy      dust
     00:00    47    18     27   196  (SSW)   3670    cldy      dust
     01:00    45    19     28   179    (S)   3799    cldy      dust
     02:00    44    20     25   199  (SSW)   3705    cldy      dust
     03:00    43    20     23   195  (SSW)   3433    cldy      dust
     04:00    41    20     22   211  (SSW)   3463   pt. cldy   dust
     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: 2.9.1
      Current TUI version: TUI 1.4.5