From: Russet McMillan
Subject: 3.5m Night Log 19991218
Date: Sun, 19 Dec 1999 07:16:24 -0700 (MST)
                         SATURDAY DECEMBER 18, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Turner            Loomis             SPIcam     12/18  17:58 18:48
Duncan         Rebull, Duncan        Echelle 12/18-19  18:48 21:40
Brown             Brown              Echelle    12/19  04:00 06:02
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU02/S     17:58 18:48    -    0    -    0    -   0.8   0    -    0
UC01/R     18:48 00:10    -   2.5   -    0    -   2.9   0    -    0
WS01/R     00:10 06:02   0.7  3.1   0    0   2.0   0    0    0    0
(note: times listed include instrument change time)
                              ACTIVITY LOG
(* means a trouble report has been issued or appended to)
1st half observing specialist: Loomis
The telescope was opened at 17:00 MST.  It was closed at 21:40, due to
clouds.  We had cirrus at sunset, followed by a period of mostly clear
sky before it clouded over.  I observed for PU02.  Doug Duncan and
Luisa Rebull observed for UC01.
*Some of my SPIcam images were teardrop shaped.  The details are in my
problem report.  The cause isn't yet known, but will be investigated.
Another hotspot leftover from the Forest Service controlled burn
flared up.  Sunspot Fire Dept. personnel responded.
2nd half observing specialist: McMillan
The sky was mostly cloudy to overcast as the morning began, with a bit
of snow (just a few flakes) around midnight.  The clouds thinned and
the sky cleared very rapidly around 04:00, and we were able to open
and get some useful data.
Guiding with the echelle was rather poor, but this may have been
because the target coordinates were rough and we had to make a large
initial offset.  If the click-to-center interface used object offsets
instead of boresight (instrument) offsets, this would not be a
problem.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             DECEMBER 18 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
17:55  SPIcam    50(781)    209  57  1.9/2.3   266  11    r'    0.8
18:35  SPIcam     0(670)    225  52  1.0/1.4   274  13    g'    1.2
19:00  Echelle   50(-111)   178  63  0.9/1.2   274   7   ND2    1.2
04:05  Echelle    0(-189)   175  57 -0.6/0.0   328  11   ND2    1.1
#First temp is air, second temp is telescope.
                                 WEATHER
                             DECEMBER 18 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    38    12      6   293  (WNW)    403     cirrus     none
     17:01    37     6     19   299  (WNW)    391     cirrus     none
     18:01    35     7      9   269  (W)      418     cirrus     none
     19:01    34    10     11   276  (W)      409     clear      none
     20:01    33    11     16   291  (WNW)    518     clear      none
     21:01    32    12     11   280  (W)      743    ptly cldy   none
     22:01    34    10     13   286  (WNW)    465    mstly cldy  none
     23:01    34    10     11   279  (W)      487    mstly cldy  none
     00:01    34    18     20   315  (NW)     323     overcast   snow
     01:01    35    16      8   279  (W)      385    mstly cldy  none
     02:01    34     8     12   268  (W)      421    mstly cldy  none
     03:01    32     8     13   319  (NW)     455     ptly cldy  none
     04:01    31    11     16   340  (NNW)    525    mstly clr   none
     05:01    30    12      9   343  (NNW)    582    mstly clr   none
     06:01    29    12      5   337  (NNW)    573    mstly clr   none
     07:01    27    13      6    15  (NNE)    525     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 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: 2.55b5.
Current guide software version: GIm Ctrlv3.0b27.
- Karen Loomis, Russet McMillan