Date: Fri, 3 Oct 1997 06:14:03 -0600 (MDT)
From: Tia Hoyes
Subject: 3.5m obslog 971002
                        THURSDAY   OCTOBER 2, 1997
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                    ACTUAL
ASTRONOMER   INSTRUMENT   DATE   START FINISH
Fan       DIS     10/02   18:45 03:30
 INST        SCHEDULED      OBS      WEATH     EQUIP   DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
PU02/R     20:08 05:37   6.6  0.0  2.9   0    0    0    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 19:30.  Karen gloria and I focused using DIS
and the GUIDER, as Xiaohui Fan wanted to make use of both instruments.
No problems tracking or guiding.  Xiaohui continued making use of the slit
camera to take high resolution images of faint galaxies.
At 2:45, I noticed the slit camera image was only displaying part of what
had been showing minutes before.  I went outside and found it to be overcast
and murky, and I observed lightning to the west.  At this time I closed the
telescope, and took a look from the catwalk.  I could see the storm coming
in from the west. I also checked the radar images which confirmed what I was
seeing. (Xiaohui also mentioned his last image was very weak)
The telescope was not reopened.
                               FOCUS LOG
                            OCTOBER  2, 1997
                Best    Telescope            Wind                 Seeing
Time   Inst     Focus    Az   El   Temp#     Dir  MPH     filter   FWHM "
19:35  DIS  -50(7117)  133.9 81.9 12.5/16.1 219.0 11.0     IN      1.39
21:15  DIS  -25(7122)  -16.8 51.2 12.8/13.4 184.5  9.6     IN      1.48
21:25GUIDER 55000(7119)-17.8 51.0 13.1/13.3 200.3 13.0      R      1.57
# The first temp is air, the second is truss, both in degrees C.
                                 WEATHER
			    OCTOBER  2,  1997
                                 Wind
    Time   Temp F Dewp.   MPH.    Dir.       DUST     Sky         Precip.
     16:01    62    43     11   213  (SSW)    446 mostly clear     none
     17:01    61    44     14   204  (SSW)    462 mostly clear     none
     18:01    60    40     10   193  (SSW)    456 mostly clear     none
     19:01    56    40     10   226  (SW)     520 mostly clear     none
     20:01    55    41      8   220  (SW)     590 mostly clear     none
     21:01    52    41      7   193  (SSW)    571 mostly clear     none
     22:01    56    39     12   182  (S)      786 mostly clear     none
     23:01    56    38     12   186  (S)      724 mostly clear     none
     00:01    55    38     10   193  (SSW)    659 mostly clear     none
     01:01    55    37     11   189  (S)      650 mostly clear   lightning
     02:01    55   100     12   183  (S)      521   murky        lightning
     03:01    52    38     11   200  (SSW)    542 partly cloudy  lightning
     04:01    51    37     13   217  (SW)     464 partly cloudy  lightning
     05:01    52    41     12   279  (W)      636 partly cloudy  lightning
     06:01    51    43      9   274  (W)      497  overcast      light drizzle
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: 2.36
Current guide software version:GIm Ctrlv3.0b11.
-Tia