From: Russet McMillan
Subject: 3.5m Night Log 990722
Date: Fri, 23 Jul 1999 04:50:44 -0600 (MDT)
                          THURSDAY JULY 22, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Gillespie       Loomis, McMillan   Shack-Hart 7/22-23  23:25  01:35
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
EN02/S     21:45  04:34  2.2  2.5   0    0    0   2.2   0    0    0
(note: times listed include instrument change time)
                              ACTIVITY LOG
(* means a trouble report has been issued or appended to)
Observing specialist: R. McMillan
Humidity was high for most of the night, made more complicated by the
fact that the dewpoint sensor may be off again by as much as a degree
celsius (it was reading less than 90% humidity when there was thick
fog on the ground).  However, as judged by condensation on railings
and car windows, the dewpoint definitely did drop for a few hours,
allowing us to obtain the largest chunk of Shack-Hartmann data yet.
We took 74 frames while the telescope temperature stabilized and at a
large number of zenith angles before the dewpoint began to rise again.
                            OBSERVER COMMENTS
                                FOCUS LOG
                              JULY 22  1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
00:15 Shack-Hart    -50
#First temp is air, second temp is telescope.
                                 WEATHER
                               JULY 22 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    52    50     13   113  (ESE)    904    ptly cldy   none
     17:01    51    49      5   141  (SE)     540    ptly cldy   none
     18:01    55    50     11   173  (S)      653    ptly cldy   none
     19:01    55    52     14   151  (SSE)    810    ptly cldy   none
     20:01    55    52      9   181  (S)      652    ptly cldy   none
     21:01    52    50     10   178  (S)      571    ptly cldy   fog
     22:01    55    46     12   179  (S)      484    mstly clr   none
     23:01    55    47     11   178  (S)      471    mstly clr   none
     00:01    55    45      9   178  (S)      555    mstly clr   none
     01:01    55    44      7   183  (S)      510    mstly clr   none
     02:01    53    50      6   178  (S)      740    mstly clr   none
     03:01    53    50      1   190  (S)      838      clear     none
     04:01    53    51      7   179  (S)      886    mstly clr   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: 2.55b5.
Current guide software version: GIm Ctrlv3.0b27.
- Russet McMillan