Date: Fri, 7 Nov 1997 07:30:10 -0700 (MST)
From: Charles Corson
Subject: 3.5m obslog 971106
                         THURSDAY NOVEMBER 6 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Gillespie    Amber/Spi    11/6   17:00 06:00
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
En01/S     18:32 05:02	  6.3  4.3  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)
WSMR was on site to collimate and tune their system on sky.  NMSU was also
aboard to investigate the feasability of using WSMR's Amber camera
for science.  On sky test were done prior to sundown and into twilight.
Nancy Chanover's tracking test was not done.  Two items, the turnover from
WSMR was too late to observe Venus.
Not on the schedule was a test of SPICAM's new instrument block.  This was
done but unsuccessful, telescope driftscans in the opposite direction as
required.  Of note, when we set up for focus, it was discovered that the
secondary controller had lost it's map.  In order to convert from the
WSMR configuration to normal NA2, the secondary tip/tilt values had to
be returned to nominal values.  In this update, a period was left off,
integer not floating point, and I strongly suspect that this was the
cause.  It is also possible that power to the secondary was interrupted
today, but seems unlikely.  Alan reported that the seeing was very good,
at times 0.9arc-sec.
Guider characterization followed.  A fair set of data was obtained and
will be passed on to Jeff Morgan.  Twenty minute guiding sequences were
made.  A first look at the data suggests that the guider is capable of
guiding at about 0.25 arcsec rms.  More careful analysis is needed,
but the upshot is that the guider is not degrading performance and can
guide with 15mag stars at less than 10sec integration (clear skies).
Some software issues and a 60hz ac noise still need to be addressed
before the project is complete.
The new tip/tilt values were installed and a 33pnt pointing model was
obtained.  The map was of good quality and was applied.  Pointing was
excellent.
Of note, on several occasions during the guiding tests, SPICAM measured
seeing at 0.86 - 0.9 arcsec, 10sec exp in R, 3.1 to 3.5 pixels fwhm.
                                FOCUS LOG
                             NOVEMBER 6 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El    #Temp   Dir MPH  filter  FWHM "
23:35  Spi    +50        162  47  4.4/4.7   185 11   R       1.2
23:40  Gdr    50000      162  47  4.4/4.7   185 11   R       1.2
00:48  Spi   +50(6108)   177  48  2.8/3.9   177  5   R       1.2
00:58  Gdr   +50(6108)   180  48  3.4/3.7   190  5   R       1.9
00:10  Spi   +50(6163)   185  48  3.5/3.9   183  8   R       1.3
4:30   Spi   -100(6154)  150  43  3.6/3.8   263  7   R       1.0
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                              NOVEMBER 5 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.   Dir.       Dust    Sky          Precip.
     16:01    47    25      4   216  (SW)     639    cirrus       none
     17:01    43    24      1   157  (SSE)    759    cirrus       none
     18:01    45    16      4   185  (S)      797    cirrus       none
     19:01    44    15      2   182  (S)      707    cirrus       none
     20:01    45    13      5   184  (S)      839    cirrus       none
     21:01    43    13      9   195  (SSW)    723    cirrus       none
     22:01    41    22      7   186  (S)      707    cirrus       none
     23:01    39    26      6   183  (S)      718    cirrus       none
     00:01    39    20     11   169  (SSE)    842    cirrus       none
     01:01    38    21      6   179  (S)      849    mstly cldy   none
     02:01    40    20      7   221  (SW)     795    mstly cldy   none
     03:01    38    28      6   201  (SSW)    833    mstly cldy   none
     04:01    38    24      7   265  (W)      866    mstly cldy   none
     05:01    38    24      5   266  (W)      907    clear	  none
     06:01    39    25      6   270  (W)     1002    clear        none
     07:01    39    24      6   289  (WNW)    919    clear        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: 2.36.
Current guide software version: GIm Ctrlv3.0b11.
Charles