From: Russet McMillan
Subject: 3.5m Night Log 20010906
Date: Fri,  7 Sep 2001 05:19:49 -0600 (MDT)
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                      Thursday, September 6th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 W.Zheng     W.Zheng,K.Chiu            GRIM            19:25  21:20
                                                       22:10  23:30
 M.Strauss   X.Fan,V.Narayanan         SPIcam            --    --
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 JH03/R      20:15  01:00  0.4  1.9   0    0   1.1  1.4   0    0    0
 PU02/R      01:00  05:48   0   4.8   0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan, J.Barentine
 First half started out mostly clear until clouds and dust spike
 forced us to close for a short while; then we reopened for a bit
 until we got more orographic clouds and a larger dust spike.  We
 remained closed during second half due to clouds and/or dust.  Both
 the enclosure dust counter and the spare were reading half again as
 high as the counter on the tower (which is displayed on the web
 page).
 The GRIM observers experienced one no-flush error, which is a
 somewhat lower rate of occurrence than average.  There were also some
 oddities in the rotator motion noted during checkout, but these had
 no significant effect on tracking.  Everything else worked perfectly.
              ---------------- FOCUS LOG ---------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ----------------------------------------------------------------------
 20:07 GrIm2(f/5)  -50(1176)   191 56  17.2/19.7  262  10   J     1.15
 21:02 NA2gdr    -1500(57500)  146 45  16.9/18.0  264  19   Clear 1.3
             --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     18:01    69    33     20   265  (W)      650  mstly clr   none
     19:01    66    29     21   256  (WSW)    450   clear      none
     20:01    63    31     20   247  (WSW)    563   clear      none
     21:01    62    32     17   267  (W)     1563  ptly cldy   none
     22:01    61    31     14   262  (W)     1708  mstly clr   none
     23:01    61    32     10   256  (WSW)    616  ptly cldy   none
     00:01    60    34     16   270  (W)      428  mstly cldy  none
     01:01    60    36     17   265  (W)     2795  ptly cldy   none
     02:01    58    38     20   268  (W)     4322  mstly cldy  dust
     03:01    57    39     18   264  (W)     1663  ptly cldy   none
     04:01    56    40     17   265  (W)     2768  ptly cldy   none
     05:01    55    40     16   266  (W)     2539  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: 2.5.5
  Current MC version: v1_7_3.