Date: Tue, 3 Nov 1998 06:11:52 -0700 (MST)
From: Karen Gloria
Subject: 3.5-m obslog 981102
                         MONDAY NOVEMBER 2, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Harrison        Harrison           GRIM2       11/2    18:35  23:58
Chanover        Chanover           GRIM2      11/2-3   00:23  04:59
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
NM05/R     18:35  00:13   -   5.6   -    0    -    0    0    -    0
NM12/R     00:13  04:59   -   3.5   -   1.3   -    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: Camron Hastings
        The dome opened to begin cooling at 17:00. Tom Harrison from
NMSU wanted to get sky flats early as well. The humidity was nice and
low (66%) compared to the last weeks. Jon Davis and Dave Woods worked
on the primary mirror support systems. There are still some issues to
b resolved with it, though it was operating tolerably well this
evening.  GRIM was behaving badly again tonight. We started the early
evening getting only 1 frame out of every 3 to work while doing
twilight flats.  It began to start working on every frame again
shortly before NM05's scheduled observing time. My first thought is
that this was a thermally related problem due to the warm-up time and
it was suggested that perhaps there was a moisture issue somewhere in
the electronics and after the boards heated a bit and any condensation
evaporated. All worked fine for the rest of the evening.
2nd half observing specialist: Karen Gloria
I spotted some small intermittent image oscillations during the second
half of the night.  We were closed from 2:30 to 3:50 MST, due to
clouds.
                             OBSERVER COMMENTS
NM05 (Harrison): "Great photometric night."
NM12 (Chanover): "The first hour or so of my time was the best.  I got
some really nice Saturn images at that time - I will try to make a
'pretty picture' for the APO web page if there is any interest."
                                 FOCUS LOG
                              NOVEBER 2 1998
Time   Inst       Focus      Az  El   #Temp    Dir  MPH  filt  FWHM "
18:20  GRIM2  - 10(6534)    109  28  2.7/4.2   268  13  f/5 H   1.05
00:45  GRIM2  - 20(6265)    114  74  2.7/3.1   277   9  f/10 K  0.9
01:50  GRIM2  + 20(6452)    247  45  4.4/4.0   267   7  f/10 K  1.0
                                  WEATHER
                              NOVEBER 2 1998
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    44    31      7   246  (WSW)    167     clear      none
     17:01    40    28      8   273  (W)      138     clear      none
     18:01    38    28     11   272  (W)      138     clear      none
     19:01    38    28      8   258  (WSW)    138     clear      none
     20:01    37    24     11   253  (WSW)    138     clear      none
     21:01    37    23     10   281  (W)      138     clear      none
     22:01    37    22      9   281  (W)      138     clear      none
     23:01    39    19      9   264  (W)      138     clear      none
     00:01    40    18     11   271  (W)      138     clear      none
     01:01    40    21      9   279  (W)      138     clear      none
     02:01    40    19     11   278  (W)      138    ptly cldy   none
     03:01    39    17      9   271  (W)      138   mstly cldy   none
     04:01    38    16      6   291  (WNW)    138    ptly cldy   none
     05:01    38    17      5   268  (W)      138    ptly cldy   none
     06:01    36    19      5   270  (W)      138    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: 2.42a.
Current guide software version: GIm Ctrlv3.0b15.
- Karen Gloria