Date: Mon, 9 Mar 1998 06:32:29 -0700 (MST)
From: Charles Corson
Subject: 3.5m obslog 980308
                           Sunday  March 8, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Bell	     Grim	  3/7    19:00  00:10
Corson       Dis          3/8    00:20  00:40
Mazeh	     Grim         3/8    01:00  05:45
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UC04 R	   19:28 00:10    0    4.7  0    0    0    0    0    0    0
PU01 O     00:10 00:50    0    0.7  0    0    0    0    0    0    0
UC13 R     00:50 05:00    0.8  4.2  0    0    0    0    0    0    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
The dome was opened to mostly clear skies, some cirrus, and good seeing.
Eric Bell et al., observed with Grim and 0.6-0.7arc-sec seeing.  The
skies cleared completely by 20:00 the seeing was good throughout their
run with no telescope or instrument problems.
I observed for the Turner Lens Monitoring program, one target with a
minimal data set.  No problems of note, photometric conditions.
Tsevi Mazeh observed with Grim for the second half of the night, again
with good conditions.  Tsevi was observing from Israel so, data transfers
were slow.  Of note, the electronics would not flush on many occasions
which interrupted the script observations.  Otherwise, all went very well.
The seeing was usually 0.7arc-sec, but focus seemed to vary and was
difficult to keep up with.  I made adjustments on the fly to keep us
close.
(* means a trouble report has been issued or appended to)
OBSERVER COMMENTS:
Eric Bell
Tsevi Mazeh
                                FOCUS LOG
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El   #Temp    Dir MPH  filter  FWHM "
19:15  Grim  -100(6003)  187  57  -3.9/-2.5 269 9    K'      0.67
21:40  Grim  0(5861)     239  39  -4.1/-4.5 270 8    K'      0.70
00:25  Dis   20(6120)    140  75  -5.0/-4.9 265/8    r       1.2
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                                   Wind
    Time  Temp F  Dewp. F  MPH.   Dir.       Dust     Sky       Precip.
     16:01    28     4     11   295  (WNW)    239
     17:01    27     5     13   325  (NW)     251
     18:01    26     6      7   294  (WNW)    273
     19:01    25     6      8   276  (W)      261
     20:01    24     7      7   244  (WSW)    246
     21:01    24     7      3   232  (SW)     349
     22:01    24     9      8   252  (WSW)    512
     23:01    24     9      8   252  (WSW)    494
     00:01    24    10      8   251  (WSW)    327
     01:01    26     9      7   264  (W)      280
     02:01    25     8      9   269  (W)      281
     03:01    26    46      6   267  (W)      128
     04:01    25    -1      9   313  (NW)     223
     05:01    26     2     12   333  (NNW)    203
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: 2.39.
Current guide software version: GIm Ctrlv3.0b11.