From: Russet McMillan
Subject: 3.5m Night Log 20000817
Date: Fri, 18 Aug 2000 05:39:25 -0600 (MDT)
                       APACHE POINT OBSERVATORY
                       3.5m Telescope Night Log
                       Thursday, Aug 17th, 2000
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)        INSTRUMENT   DATE   START  FINISH
 --------------------------------------------------------------------
 B.Gillespie    C.Hastings         S-H, NA2Gdr, 8/17   04:05  05:25
                R.McMillan         SPIcam       - 18
  INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
 I/RO/DN    START  FINISH  D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 EN01/O     20:42  05:32  0.8  6.7   0    0    0   1.3   0    0    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
Observing Specialist, 1st Shift: Noel Camron Hastings
Observing Specialist, 2nd Shift: Russet McMillan
Although our lightning warning got stuck on again, the weather began
to look plausible around 02:00, so I performed a late checkout of the
telescope.  * The tertiary was complaining that it hadn't been homed;
perhaps the controller was restarted recently?  Since it was quite
late to call anyone to monitor the tertiary motions, and in any case
it's unclear whether that procedure is actually helpful, I homed all
axes myself.
I was able to open at 04:05 under variably cloudy skies.  There was
just enough time for me to update the secondary tilts as a function of
altitude and run a 70-point pointing model, but in practice the
pointing model had to be abandoned 3/4 of the way through due to thick
clouds and rising humidity.  The partial data set still appeared
usable, however, with an RMS error of less than 4 arcseconds.  The
telescope was closed at 05:25.
        --------------- INSTRUMENT FOCUS LOG ----------------
                                     Air/Truss   Wind
Time  Instrument  Focus     Az  El   #Temp-C    Dir MPH  filt   FWHM"
---------------------------------------------------------------------
              ------------- WEATHER CONDITIONS ------------
                               Wind                          Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky  Conditions
    ------------------------------------------------------------------
     18:01    56    53     15   124  (SE)     951    cloudy    none
     19:01    55    51     17   112  (ESE)   1029    cloudy   lt rain
     20:01    56    51     19   123  (ESE)   1343    cloudy    rain
     21:01    53    51     19   143  (SE)    1368    cloudy    rain
     22:01    54    50     23   132  (SE)     675    cloudy   lt rain
     23:01    55    51     26   139  (SE)    1690    cloudy    none
     00:01    55    51     23   145  (SE)    1635    cloudy    none
     01:01    55    51     19   143  (SE)    1573    cloudy    none
     02:01    56    50     20   147  (SSE)   1227  ptly cldy   none
     03:01    55    50     19   147  (SSE)   1188  ptly cldy   none
     04:01    55    50     16   153  (SSE)    934  ptly cldy   none
     05:01    55    50     18   144  (SE)     974    cloudy    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: 2.62.
Current guide software version: GIm Ctrlv3.0b27. Current TCC version
is 2.4.0b1 Current MC version: v1_7_3.
-- Noel Camron Hastings, Russet McMillan