From: "Camron Hastings"
Subject: 3.5-meter night log 981204
Date: Sat, 5 Dec 1998 05:51:30 -0700
			      Friday, December 4th 1998
			     APACHE   POINT  OBSERVATORY
				 3.5-meter Observing Log
                                 ACTUAL
----------------------------------------------------------------------
ASTRONOMER      OBSERVER(S)      INSTRUMENT     DATE     START  FINISH
----------------------------------------------------------------------
Hereld          Bell             GrIm II       12/4-5    18:24  00:10
Rodgers         Rodgers          GrIm II       12/5      00:10  05:24
----------------------------------------------------------------------
 INST        SCHEDULED     WEATH     EQUIP      OBS      DAY   NOTUSED
I/RS/DN    START  FINISH   D    B    D    B    D    B    USE   D    B
----------------------------------------------------------------------
UC07/R     18:24  00:10    -   4.0   -    0    -   2.2    0    -    0
UW05/R     00:10  05:23    -    0    -   0.3   -   4.9    0    -    0
                     -------- ACTIVITY LOG --------
1st half Observing Specialist: Karen Gloria
     The telescope was opened at 17:55, after the sky cleared.  We had
just enough time to focus and take a few images before the sky clouded
up again.  We reopened at 22:45, when the sky cleared.
2nd half Observing Specialist: Camron Hastings
     Sky stayed clear throughout the second half. I noticed quite a few
'hiccups' in the guider images. Bernadette also noticed trailed images
occurring randomly throughout the night, although the total number of
lost images was small.
              ------------ Observer Comments ------------
UW05 (B.Rodgers): My half of the night enjoyed beautiful clear weather.
GRIM behaved wonderfully throughout the run.  We did notice a half-dozen
or more (out of >400) images were badly trailed, but the problem was
sporadic and never persisted more than one image. The telescope pointed
very well, and seemed to track well (except these occasional jumps) even
without much help from the guider (which couldn't keep up with the many
offsets I was doing along the slit).  All in all, a wonderful uneventful
and productive night!
   				       FOCUS LOG
                           December 4th 1998
                   Best    Telescope  Temp (C)    Wind          Seeing
 Time  Instrmt    Focus     Az   El   Air/Truss  Dir MPH  filter FWHM"
----------------------------------------------------------------------
18:10  GrIm2   -175(6259)  171   64   4.2/5.8    270  17  K'/f5  0.73"
23:00  GrIm2   - 75(6288)  180   64   4.2/4.2    258  17  K'/f5  0.67"
01:30  Guider 60500(6266)  203   55   3.1/2.9    263  13  none   1.23"
                               WEATHER LOG
                            December 4th 1998
                                  Wind
     Time   Temp-F Dewp-F MPH   Direction    Dust      Sky      Precip
    ------------------------------------------------------------------
     16:01    41    23     10   270  (W)            mstly cldy   none
     17:01    41    20     15   266  (W)            mstly cldy   none
     18:01    39    19     15   295  (WNW)          ptly cldy    none
     19:01    40    16     16   278  (W)            mstly cldy   none
     20:01    41    17     11   267  (W)             overcast    none
     21:01    41    17     12   264  (W)            mstly cldy   none
     22:01    40    18     16   215  (SW)           mstly cldy   none
     23:01    40    13     15   232  (SW)           ptly cldy    none
     00:01    39    15     11   267  (W)            mstly clr    none
     01:01    38    15     13   254  (WSW)           clear       none
     02:01    38    16     15   262  (W)            photometric  none
     03:01    38    17     15   267  (W)            photometric  none
     04:01    37    18     14   246  (WSW)          photometric  none
     05:01    37    17     18   242  (WSW)          photometric  none
     06:01    37    17     13   238  (WSW)          photometric  none
note: the wind was coming from the azimuth listed.  The convention
used is north=0 degrees, east=90 degrees. The dust count is for the
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 Ctrl v3.0b 15.out
- KAG, NCH