Date: Sat, 3 Apr 1999 06:32:21 -0700 (MST)
From: Russet McMillan
Subject: 3.5m Night Log 990402
                           FRIDAY APRIL 2, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
York              Adler             Echelle     4/2      -     -
York            Mallouris           Echelle   4/2-3      -     -
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UC12/R     18:18 19:48    -    -    -    -    -    -    0    -    -
UC02/R     19:48 04:25   0.4  8.3   0    0    0    0    0    0    0
(note: times listed include instrument change time)
                              ACTIVITY LOG
(* means a trouble report has been issued or appended to)
1st half observing specialist: Karen Gloria
The telescope was not opened during the first half of the night.
This afternoon we experienced one of the worst dust events anyone
around here can remember.  The dust was so thick at one point this
afternoon I had to turn on my car headlights while driving to the
observatory.  The dust counter topped out at 50x our shutdown
level. Conditions improved rapidly at sunset, but not quite enough to
allow opening the telescope.  The sky became overcast as the dust
cleared up considerably.  I suspect nearby precipitation was cleaning
the air.  We had just a couple snow flurries here.
*The air conditioner in the computer room quit during the evening.
Fortunately Camron was around and he knew the secret to bringing it
back on line.
2nd half observing specialist: Russet McMillan
The telescope was not opened during second half due to overcast skies,
occasional high winds, and a really pathetic attempt at precipitation.
                            OBSERVER COMMENTS
                                FOCUS LOG
                              APRIL 2 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
#First temp is air, second temp is telescope.
                                 WEATHER
                              APRIL 2 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    25    24     18   292  (WNW)  15529     dusty     gypsum
     17:01    26    22     28   292  (WNW)   2779     dusty     gypsum
     18:01    27    19     15   266  (W)     3440    ptly cldy   none
     19:01    26    14     15   268  (W)     6926    ptly cldy   none
     20:01    25    10     23   293  (WNW)   2052    mstly cldy  none
     21:01    25    10     11   266  (W)     1405     overcast   none
     22:01    24     9     18   290  (WNW)    617     overcast   none
     23:01    22     9     21   293  (WNW)    790     overcast  flurries
     00:01    21    10     21   327  (NNW)    609     overcast   none
     01:01    20     6     27   302  (WNW)    803     overcast   none
     02:01    20     6     30   295  (WNW)   1990     overcast  flurries
     03:01    19     5     22   303  (WNW)    623     overcast   none
     04:01    20     2     32   278  (W)      801     overcast   none
     05:01    19     3     15   266  (W)      380     overcast   none
     06:01    17     4     24   303  (WNW)    232     overcast   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
> 1 micron per 0.1 cu. ft.
                             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: 2.52
Current guide software version: GIm Ctrlv3.0b17.
- Karen Gloria, Russet McMillan