From: Russet McMillan
Subject: 3.5m Night Log 20060817
Date: Fri, 18 Aug 2006 05:27:45 -0600 (MDT)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Thursday, August 17, 2006
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)              INSTRUMENT   START FINISH
 -------------------------------------------------------------------
 Q.Hart         Q.Hart                   SPIcam       --:--  --:--
 A.Becker       A.Becker,A.Puckett       SPIcam       --:--  --:--
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 CU02/R      20:43  01:10  4.4   0    0    0    0    0    0    0    0
 UW05/R      01:10  05:32  0.2  4.2   0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: G.Saurage
 Humidity was rising fast and a bank of low-level clouds moving in rapidly
 from the north at sunset. I thought for sure we were going to be able to
 get on sky on time tonight, but no. Raining, fog or high humidity
 continued for the rest of the first half.
 2nd Half Observing Specialist: R.McMillan
 Second half was rather odd.  The rain cleared off very suddenly, but
 there were still radar traces nearby.  The dewpoint sensor said the
 humidity had dropped, but that didn't agree with the PT dewpoint
 sensor, the handheld thermohygrometer, or with basic olfactory
 observations.  There were a few holes in the clouds, but not enough
 to be useful.  In the end, the threatening radar echoes were the
 deciding factor and we never opened.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
  Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    57    52      1   290  (WNW)    446 mstly clr    none
     17:00    57    50      1   340  (NNW)    454  ptly cldy   none
     18:00    58    46      4   346  (NNW)    468 mstly cldy   none
     19:00    57    49      7   357    (N)    479 mstly clr   humid
     20:00    55    53     11     6    (N)    578   cloudy    humid
     21:00    56    53      8   318   (NW)    749   cloudy    humid
     22:00    56    53      8   317   (NW)    838 mstly cldy   rain
     23:00    55    54     10    36   (NE)    903 mstly cldy  humid
     00:00    52    48     16    61  (ENE)    174   cloudy   lt rain
     01:00    56    46     11    65  (ENE)    263 mstly cldy  humid
     02:00    56    47      4     1    (N)    396 mstly cldy  humid
     03:00    56    49      5     1    (N)    564  ptly cldy  humid
     04:00    57    50      7   322   (NW)    545  ptly cldy  humid
     05:00    57    48      7   281    (W)    575 mstly cldy  humid
     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: 2.8.4
      Current TUI version: TUI 1.2