From: Russet McMillan
Subject: 3.5m Night Log 19991222
Date: Thu, 23 Dec 1999 06:03:56 -0700 (MST)
                         WEDNESDAY DECEMBER 22, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Mason            Williams            GrIm2    12/22-23 18:00 02:15
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
NM09/S     18:00 06:04    -   4.3   -   0.2   -   7.6   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 17:15 MST.  Frank and I first inspected
the roof and found it clear of ice and snow, except for some ice on
the rail the shutter rides on.  We knocked this off.
The sky was clear but the wind was easterly, and the seeing was poor.
Tom Williams was onsite to observe with GrIm2 for NM09.  *The grim
control application that runs on the grim mac died three times, with
error of type 1.  We were able to restart without too much loss of
time.
2nd half observing specialist: McMillan
Second half remained clear, but the wind picked up.  The telescope was
closed from 01:25 to 01:55 due to wind, re-opened briefly, then closed
again at 02:15 for the rest of the night.
Both GRIM and the telescope behaved well while in use, although the
effects of windshake were clearly visible in the images.  During the
enforced closure, we took test images with the echelle, which also
worked well (both the shutter and the readout).
                            OBSERVER COMMENTS
                                FOCUS LOG
                             DECEMBER 22 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
18:05  GrIm2    -50(698)    234  46 -5.8/-3.1   86   4    J     1.0
19:05  GrIm2   -100(577)    235  44 -5.9/-4.5   66  12  K-short 1.3
21:30  GrIm2   -100(473)    221  51 -6.7/-6.2   86  12    J     1.4
22:15  GrIm2   -100(396)    243  59 -6.6/-7.0   72  22    J     1.6
23:30  GrIm2    -50(458)    138  48 -7.6/-7.8   71  23    J     1.6
00:50  GrIm2    -30(393)    189  66 -6.9/-8.2   71  20    J     1.8
#First temp is air, second temp is telescope.
                                 WEATHER
                             DECEMBER 22 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    23    20     10     1  (N)     1179    ptly cldy   none
     17:01    23    18     12    31  (NNE)   1177      clear     none
     18:01    22    18      6    73  (ENE)   1471      clear     none
     19:01    22    16      9    75  (ENE)   1502      clear     none
     20:01    23    13     17    69  (ENE)    502      clear     none
     21:01    21    16     21    77  (ENE)    771      clear     none
     22:01    20    13     22    72  (ENE)    866      clear     none
     23:01    19    12     21    73  (ENE)    707      clear     none
     00:01    19     6     21    74  (ENE)    806      clear     none
     01:01    19     3     23    76  (ENE)    645      clear     none
     02:01    19    -2     28    72  (ENE)    816      clear     none
     03:01    19    -2     27    66  (ENE)    659      clear     none
     04:01    19     0     28    71  (ENE)    214      clear     none
     05:01    19     3     31    71  (ENE)    239      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: 2.55b5.
Current guide software version: GIm Ctrlv3.0b27.
- Karen Loomis, Russet McMillan