From: Russet McMillan
Subject: 3.5m Night Log 19991225
Date: Sun, 26 Dec 1999 06:14:18 -0700 (MST)
                        SATURDAY DECEMBER 25, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Gonzalez         Gonzalez            Echelle  12/25-26   -     -
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UW09/R     18:01 06:06   2.7  9.4   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)
1st half observing specialist: Loomis
The telescope was not opened tonight, due to snow on the enclosure
roof.  It's light snow, so it should blow off or melt off by tomorrow
afternoon.  The site received about 9 inches of snow, with a lot of
drifting due to the high wind last night.  Cloudcroft received 13
inches of snow.  Sunspot highway has been plowed.
There was a lot of snow in the 2.5-m enclosure again this afternoon,
about 2 inches deep up near the inside of the east door with a dusting
several feet underneath the telescope.  The snow was 6 inches deep in
a couple places.  There was also a little snow on the cover on the
front of the telescope.  I cleared the snow out of the enclosure.
Frank found a lot of snow in the DIMM dome as well.  He cleared out
the snow in that enclosure.
The buttons on the keypad locks to the upper and lower level doors to
the 2.5-m enclosure were both frozen.  I thawed out the lower level
lock with a heat gun.
Frank finished the site snow removal today.
2nd half observing specialist: McMillan
The humidity was high until 03:00, when the wind shifted and a warmer,
dry air mass moved in.  The telescope was left facing south for
maximum insolation during the day, so if the temperature remains at or
above freezing, the ice should be gone from the enclosure roof by next
evening.
                            OBSERVER COMMENTS
                                FOCUS LOG
                             DECEMBER 25 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
#First temp is air, second temp is telescope.
                                 WEATHER
                             DECEMBER 25 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    25    22     19   126  (SE)     471    ptly cldy   none
     17:01    24    22     16   146  (SE)     591     clear      none
     18:01    23    18     11   127  (SE)     383     clear      none
     19:01    21    18     15   123  (ESE)    374     clear      none
     20:01    24    19     14   137  (SE)     491     clear      none
     21:01    23    20     17   127  (SE)     523     clear      none
     22:01    21    18     13   109  (ESE)    369     clear      none
     23:01    21    20     11   106  (ESE)    379     clear      none
     00:01    20    19      6    83  (E)      341     clear      none
     01:01    20    19     12   125  (SE)     523     clear      none
     02:01    20    18      2   101  (E)      384     clear      none
     03:01    25    10      2   173  (S)      260     clear      none
     04:01    33    -7      5   185  (S)      115     clear      none
     05:01    32     0      1   194  (SSW)    169     clear      none
     06:01    31    -1      1   209  (SSW)    165     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