Date: Wed, 14 Apr 1999 06:00:58 -0600 (MDT)
From: Russet McMillan
Subject: 3.5m Night Log 990413
                 Apache Point Observatory, Sunspot, NM
                       Tuesday, April 13th, 1999
                     3.5-meter Night Observing Log
                                Actual
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ASTRONOMER     OBSERVER(S)       INSTRUMENT    DATE      START  FINISH
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K.Krisciunas   A.Diercks         GrIm II       4/13      --:--  --:--
T.Wyder        T.Wyder           SPIcam        4/13-14   --:--  --:--
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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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UW02/R    20:58  21:58    1.0   -    0    -    0    -    0    0    -
UW03/R    21:58  05:09    7.2   -    0    -    0    -    0    0    0
               -------------- Activity Log --------------
1st Half Observing Specialist: N.C.Hastings
    High winds and clouds greeted us this afternoon, again. I did not
open the enclosure. An instrument switch was made by UW, from SPIcam
to GRIM, the change time came out of UW02's program time for this
change. Time for the annual soldering of GRIM temp circuits! GRIM is
sending no temp info, or too much, all values are pegged at 383.08
Kelvin. I issued a problem report. GRIM is usable and is cold as far
as I can tell, based on DARK frame data.
2nd Half Observing Specialist: R.McMillan
Humidity, high winds, and a few hours of snow . . .
                               FOCUS LOG
                            April 13th 1999
                  Best    Telescope    Temp      Wind          Seeing
Time  Instrmnt   Focus      Az  El   Air/Truss  Dir MPH  filter FWHM"
---------------------------------------------------------------------
                              WEATHER LOG
                            April 13th 1999
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    38    11     32   258  (WSW)   4031    cloudy      none
     17:01    33     7     26   262  (W)     1929    cloudy      none
     18:01    32    10     17   242  (WSW)   1263    cloudy      none
     19:01    29    16     15   270  (W)     4364    cloudy      none
     20:01    29    19     24   294  (WNW)  22694    cloudy      none
     21:01    28    20     23   294  (WNW)   1760    cloudy      none
     22:01    29    21     17   293  (WNW)    842    cloudy      none
     23:01    29    21     15   289  (WNW)    677   ptly cldy    none
     00:01    29    20     19   289  (WNW)    530    cloudy      snow
     01:01    27    27     15   290  (WNW)    484    cloudy      snow
     02:01    28    28     13   315  (NW)      59    cloudy      snow
     03:01    30    30     10   293  (WNW)    180    cloudy      snow
     04:01    30    30     13   329  (NNW)    803   ptly cldy    none
     05:01    31    29     22    24  (NNE)    933   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 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