From: Russet McMillan
Subject: 3.5m Night Log 20050219
Date: Sun, 20 Feb 2005 05:57:35 -0700 (MST)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                       Saturday, February 19, 2005
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 D.York          D.York                 DIS            --:--  --:--
 R.McMillan      R.McMillan             SPIcam         --:--  --:--
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 UC02/R      18:46  00:10   0   5.4   0    0    0    0    0    0    0
 NM08/O      00:10  05:47  0.9  4.7   0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 More unstable atmospheric conditions late today, with thunderstorms that
dropped significant amounts of rain and small hail around the site.  Rain
continued on and off into the early evening.  Just short of 22:00 the sky
cleared and I opened the cloud camera but kept the telescope closed
because of high humidity.  Don took some DIS cals while we waited but the
humidity climbed as the air temperature cooled, pegging near 98%.
 2nd Half Observing Specialist: R.McMillan
 During second half we had alternating clouds and high humidity.
 Whenever one improved, the other worsened.  The cloudcam frosted
 over.  The telescope was never opened.
                      ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
      (SEGDFNVO)    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
     ------------------------------------------------------------------
     16:01    38    33     16   214  (SW)          Overcast    rain
     17:01    38    34     28   230  (SW)          Overcast    rain
     18:01    38    33     17   264  (W)           Overcast    none
     19:01    35    35     20   275  (W)           Overcast    rain
     20:01    33    32     15   269  (W)           MstlyCldy   none
     21:01    34    30     17   272  (W)           MstlyCldy   none
     22:01    33    30     15   263  (W)           MstlyClr    none
     23:01    33    31     18   262  (W)           MstlyClr    none
     00:01    32    30     28   244  (WSW)         ptly cldy   none
     01:01    32    30     20   241  (WSW)         ptly cldy   none
     02:01    31    29     12   263  (W)           ptly cldy   none
     03:01    31    27     18   253  (WSW)        mstly cldy   none
     04:01    31    27     19   264  (W)            cloudy     none
     05:01    31    30     19   260  (W)            cloudy     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.
     Note: The Tower Dust counter appears to be down at this time
                              TELESCOPE STATUS
      Telescope drives operational. Current Remark version: 2.85b
      Current TCC version: 2.7.2  Current TUI version: TUI 0.94b2