Date: Fri, 8 May 1998 08:00:47 -0600 (MDT)
From: Karen Gloria
Subject: 3.5-m obslog 980507
                           THURSDAY MAY 7, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Turner           Gloria               DIS        5/7   21:22 22:02
Cooray           Cooray              GRIM2      5/7-8  22:02 01:10
Rodgers          Rodgers             GRIM2       5/8   01:10 04:37
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU01/S     21:22 22:02    -   0.7   -    0    -    0    0    -    0
UC06/R     22:02 01:10    -   3.1   -    0    -    0    0    -    0
UW10/R     01:10 04:37    -   3.5   -    0    -   0.6   0    -    0
(note: times listed include instrument change time)
                               ACTIVITY LOG
(* means a trouble report has been issued or appended to)
The telescope was opened at 19:35 under a lot of high, thick cirrus.
The observers were myself for PU01, Asantha Cooray for UC06, and
Bernadette Rodgers for UW10.  The clouds were a problem for all of the
observers.  We had patchy, high, thick cirrus all night and into the
morning.
The was a problem with GRIM2 getting stuck in spectral mode.  I sent
out a detailed PR.  I power cycled the instrument, but that didn't fix
the problem.  It eventually got out of spectral mode after several
different move requests.  Bernadette continued to have some of the
same problem afterwards.
			     OBSERVER COMMENTS
Bernadette (UW10) - "Most of the night went very smoothly.  After
observing several objects with no problems (except variable clouds),
at one point I was unable to issue a 'grimmove' command to set the
config. No matter what parameters we tried, we got 'Move error, too
many steps.  Try again' Karen had to powercycle GRIM to recover.
After that, I got the error a few more times, but it worked when I
tried again.  The neutral density filter wheel may have been the
culprit- the 'grimmove 5 3 3' command most often got the error which
sets imaging mode with a neutral density filter in.  Once I stopped
using the ND filter, I didn't get the error again.
   I was unable to use twilight for cals as there was another group on
after me which was not on the schedule.  Fortunately for me (and
unfortunately for her) Karen agreed to stay up and get the cals for me
after the next group finished.  Thanks, Karen!"
                                 FOCUS LOG
                                MAY 7 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El   #Temp    Dir MPH  filter  FWHM "
21:00   DIS  -100(6450)  341  65 10.3/10.9  254  13    r      1.3
22:25  GRIM2 -150(6519)   44  52 10.2/10.3  257  12    J      1.1
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                               MAY 7 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust     Sky       Precip.
     16:01    56    15     10   263  (W)      974 thick cirrus   none
     17:01    54    13     16   259  (W)     1026 thick cirrus   none
     18:01    53     9     18   260  (W)     1102 thick cirrus   none
     19:01    53    10     14   259  (W)     1199 thick cirrus   none
     20:01    50    12     10   262  (W)     1383 thick cirrus   none
     21:01    50    10     12   261  (W)     1460 thick cirrus   none
     22:01    51     9     13   261  (W)     1377 thick cirrus   none
     23:01    50    10     13   237  (WSW)   1469 thick cirrus   none
     00:01    48    10     11   241  (WSW)   1311 thick cirrus   none
     01:01    48     8     11   259  (W)     1293 thick cirrus   none
     02:01    48     9     16   223  (SW)    1451 thick cirrus   none
     03:01    46     8     11   232  (SW)    1203 thick cirrus   none
     04:01    45     3     12   235  (SW)    1205 thick cirrus   none
     05:01    44     7     10   263  (W)     1232 thick cirrus   none
     06:01    44    10     13   256  (WSW)   1391 thick cirrus   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: 2.39.
Current guide software version: GIm Ctrlv3.0b11.
-Karen