Date: Tue, 13 Apr 1999 06:45:24 -0600 (MDT)
From: Russet McMillan
Subject: 3.5m Night Log 990412
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                 Apache Point Observatory, Sunspot, NM
                       Monday, April 12th, 1999
                     3.5-meter Night Observing Log
                                Actual
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ASTRONOMER     OBSERVER(S)       INSTRUMENT    DATE      START  FINISH
----------------------------------------------------------------------
V.Galarza      V.Galarza         SPIcam        4/12      --:--  --:--
B.Margon       E.Deutsch         DIS           4/12-13   --:--  --:--
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 INST       SCHEDULED      WEATH     EQUIP      OBS     DAY   NOTUSED
I/RS/DN   START  FINISH    D    B    D    B    D    B   USE   D    B
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NM08/R    20:57  01:10    4.2   -    0    -    0    -    0    0    -
UW03/R    01:10  05:11    4.0   -    0    -    0    -    0    0    0
               -------------- Activity Log --------------
1st Half Observing Specialist: N.C.Hastings
    We never opened first half due to thick cloud cover and high winds
at times. Dust was not very good either. Eric Deutsch worked on the
guider monitor a bit and has incorporated DIMM information into it.
2nd Half Observing Specialist: R.McMillan
...clouds, high humidity, high dust, high winds, rain, thunder,
lightning, fog...
                               FOCUS LOG
                            April 12th 1999
                  Best    Telescope    Temp      Wind          Seeing
Time  Instrmnt   Focus      Az  El   Air/Truss  Dir MPH  filter FWHM"
---------------------------------------------------------------------
                              WEATHER LOG
                            April 12th 1999
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    52    27     34   209  (SSW)   1312     cloudy     none
     17:01    50    29     30   211  (SSW)    785     cloudy     none
     18:01    50    23     11   196  (SSW)    958     cloudy     none
     19:01    49    24      9   258  (WSW)   2136     cloudy     none
     20:01    50    20     15   258  (WSW)   1560     cloudy     none
     21:01    50    19     20   266  (W)     1443     cloudy     none
     22:01    50    18      2   338  (NNW)   1871     cloudy     none
     23:01    47    19     12    76  (ENE)   1628     cloudy     none
     00:01    45    37     11    92  (E)     3076     cloudy     none
     01:01    47    37     13   114  (ESE)   3085     cloudy     none
     02:01    47    39     11   119  (ESE)   3679     cloudy     rain
     03:01    47    41      9   173  (S)     3792     cloudy     rain
     04:01    45    41     31   213  (SSW)   3252     cloudy     none
     05:01    45    42     26   200  (SSW)   3325     cloudy     none
     06:01    44    44     29   204  (SSW)    373     cloudy     fog
note: the wind was coming from the azimuth listed.  The convention
used is north=0 degrees, east=90 degrees. The dust count is for the
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: 2.55b2
Current guide software version: GIm Ctrl v3.0b 17.out
-  NCH, RM