Date: Sat, 14 Mar 1998 04:47:11 -0700 (MST)
From: Karen Gloria
Subject: 3.5-m obslog 980313
                          FRIDAY MARCH 13, 1998
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Rodgers        GRIM2      3/13   20:00 23:30
Turner          DIS     3/13-14  23:30 00:10
Devereux       GRIM2      3/14     -     -
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UW11/R     19:32 23:30    -   3.5   -   0.5   -    0    0    -    0
PU01/S     23:30 00:10    -   0.7   -    0    -    0    0    -    0
NM08/R     00:10 04:53    -    0    -   4.7   -    0    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 20:00 MST.  Opening was delayed by clouds.
The clouds thinned and the sky was perfectly clear for a while.  The
telescope was closed at 00:15 MST, due to clouds.  Snow began to fall
at 01:00 MST.  Only about 1/2-inch accumulation so far.
The observers were Bernadette Rodgers for UW11, myself for PU01, and
Nick Devereux for NM08.  Bernadette lost some time at the beginning of
her run due to clouds, but was pleasantly surprised when the sky
cleared.  I observed one of the gravitational lens targets for PU01.
The sky began to cloud up at the end of that run.  Nick's run was
snowed out.
			     OBSERVER COMMENTS
Bernadette (UW11) - "Friday the 13th turned out to be lucky for us!
It looked like another overcast, rainy night but then the sky cleared
and we were open most of my run.  I did GRIM spectroscopy in f/20
mode- the pointing and tracking (with guiding) worked well, so I had
no trouble getting enough light through the (0.3"!) slit.  There seems
to be fairly strong banding at f/20 that is not there at f/10, it
remains to be seen how well the flats will remove it.  Obtaining
bright quartz flats frames requires at least 10 minute exposures at
f/20, resulting in lots of calibration time.  The net was a bit slow
at times, but the ftp connection worked all night."
                                FOCUS LOG
                              MARCH 13 1997
                  Best   Telescope           Wind            Seeing
Time   Inst      Focus    Az  El   #Temp    Dir MPH  filter  FWHM "
20:15  GRIM2  -150(6220) 179  66  2.9/4.5   160  17    K      0.7
21:15  GRIM2  -120(6277) 271  49  2.9/3.6   154  17    K      1.5
22:20  GRIM2  -150(6389) 275  19  2.7/2.8   156  16    K      1.3
23:45   DIS   -150(6002) 339  64  0.7/1.7   133  24    r      1.6
#The first temp is air, the second is truss, both in degrees Celsius
                                 WEATHER
                              MARCH 13 1997
                                   Wind
    Time  Temp F  Dewp. F  MPH.	  Dir.       Dust     Sky       Precip.
     16:01    46    21     17   201  (SSW)    909  ptly cldy     none
     17:01    41    18     16   215  (SW)     899  ptly cldy     none
     18:01    39    21     12   209  (SSW)    997  ptly cldy     none
     19:01    38    22     13   167  (SSE)   1003  ptly cldy     none
     20:01    37    22     14   171  (S)     1068  ptly cldy     none
     21:01    37    23     15   167  (SSE)   1049  ptly cldy     none
     22:01    37    24     16   156  (SSE)   1078    clear       none
     23:01    35    24     16   133  (SE)    1022    clear       none
     00:01    34    24     21   145  (SE)     987  ptly cldy     none
     01:01    35    26     11   181  (S)      974   overcast     snow
     02:01    31    30     22   141  (SE)     584   overcast     snow
     03:01    34    71     15   175  (S)      726   overcast     none
     04:01    35    29     14   180  (S)      679   overcast     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