From: Russet McMillan
Subject: 3.5m Night Log 20000813
Date: Mon, 14 Aug 2000 06:21:44 -0600 (MDT)
                       APACHE POINT OBSERVATORY
                       3.5m Telescope Night Log
                        Sunday, Aug 13th, 2000
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)        INSTRUMENT   DATE   START  FINISH
 --------------------------------------------------------------------
 W.Zheng        W.Zheng,           GRIM(f/5)    8/13   20:15  01:08
                Z.Tsvetanov
 D.York         D.York             Echelle      8/14   01:12  04:49
 B.Gillespie    R.McMillan         S-H          8/14   04:52  05:50
  INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
 I/RO/DN    START  FINISH  D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 JH04/R     20:47  01:10   -    0    -   0.1   -   4.3   0    -    0
 UC03/R     01:10  04:49   -    0    -   0.1   -   3.5   0    -    0
 EN01/O/D   04:49  05:29   -    0    -    0    -   0.7   0    -    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
Observing Specialist: Russet McMillan
The night started out partly cloudy with good seeing, then shifted to
a pattern of stronger wind and more variable seeing.  During checkout,
the PMSS desiccant showed pink, and there was one example of
oscillating behavior visible on the load cell monitors during the test
slews, but we had no obvious cases of PMSS trouble during actual
observing.
GRIM displayed some of its favorite bugs, with two failures of the
application on the ICC and one "no flush" error in the middle of a
script.  Each of these was easily fixed, but together they cost
several minutes.
The observer reported some poor tracking while the echelle was in use,
a change from previous nights.  I noticed that some of the magnasensor
errors in altitude were slightly higher than normal, but not by much.
Running the telescope up and down to cross more magnasensors did not
reduce the errors or improve tracking, but the problem wasn't bad
enough to warrant taking more time to work on it.  The tracking
difficulties might also have been due to the deterioration in seeing.
Since SPIcam has been allowed to warm in preparation for pumping
during the upcoming engineering, the time scheduled for PU05 was given
instead to Shack-Hartmann testing.  I managed to do a near-complete
altitude sweep with data from 28 to 72 degrees altitude, plus targets
at 20 degrees and 82 degrees which might or might not be useful (I was
still seeing oscillations at high altitude, and it was getting light).
                   ****** OBSERVER COMMENTS ******
                             -  NONE  -
        --------------- INSTRUMENT FOCUS LOG ----------------
                                     Air/Truss   Wind
Time  Instrument  Focus     Az  El   #Temp-C    Dir MPH  filt   FWHM"
---------------------------------------------------------------------
20:30 GRIM(f/5)   0(1402)  119  60  16.9/18.2   154  14   J      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.
-- Russet McMillan