From: Russet McMillan
Subject: 3.5m Night Log 20010618
Date: Tue, 19 Jun 2001 05:30:11 -0600 (MDT)
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                        Monday, June 18th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 S.Hawley      N.Silvestri             DIS-High        20:50  05:10
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW02/R      21:18  04:52   0    0    0    0   7.1  0.5   0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: Russet McMillan
 A successful night, if less than ideal.  Clouds and threatening
 weather in late afternoon kept us closed until mid-twilight, and more
 clouds cost some photons during the middle portion of the night, but
 we were open the whole night in spite of a small dust event -- the
 pressurization fans and the fact that we were facing away from the
 wind kept the dust level in the dome much lower than outside.  Seeing
 was mostly good to moderate (0.8-1.5 arcsec), with a few periods of
 ~2 arcsec.  Everything worked perfectly; there were no guider
 failures tonight.
         --------------- INSTRUMENT FOCUS LOG ----------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ----------------------------------------------------------------------
 21:26  DISslit    150(1499)   158 55  16.4/16.8  110  13   -     1.40
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     18:01    61    33     14    27  (NNE)    655  mstly cldy   none
     19:01    63    30     15    78  (ENE)    665  mstly cldy   none
     20:01    63    30     12    84  (E)      943   ptly cldy   none
     21:01    62    29      9    83  (E)     1180   ptly cldy   none
     22:01    61    31     10   111  (ESE)   2158   mstly clr   none
     23:01    61    31     15   128  (SE)    1814   mstly clr   none
     00:01    60    33     13   138  (SE)    1918   mstly clr   none
     01:01    59    34     13   176  (S)     3505   ptly cldy   none
     02:01    58    38     14   173  (S)     2382   ptly cldy   none
     03:01    58    38     13   178  (S)     1944   ptly cldy   none
     04:01    58    35      8   192  (SSW)   2460   mstly clr   none
     05:01    57    36      6   181  (S)     2272   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
  Primary, secondary, and tertiary mirrors in place and collimated.
  Primary support system operational. Mirror ventilation system in place.
  Telescope drives operational. Current Remark version: 2.62. Current
  guide software version: GIm Ctrlv4.1b2. Current TCC version: 2.5.3
  Current MC version: v1_7_3.