From: Russet McMillan
Subject: 3.5m Night Log 990711
Date: Mon, 12 Jul 1999 06:39:18 -0600 (MDT)
                           SUNDAY JULY 11, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Wyder            Wyder              SPIcam    7/11-12  01:00  03:25
Krisciunas       Krisciunas         SPIcam      7/12   03:25  04:00
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UW03/R     21:53  03:25  3.1   -    0    -   2.4   -    0    0    -
UW02/R     03:25  04:25  0.4   -    0    -   0.6   -    0    0    -
(note: times listed include instrument change time)
                              ACTIVITY LOG
(* means a trouble report has been issued or appended to)
Observing specialist: Russet McMillan
The telescope was open during evening twilight, then closed for most
of first half due to humidity.  We re-opened at 01:00 when the
humidity dropped, only to have clouds moved in.  After closing at
04:00 due to clouds, we were able to open for an hour during morning
twilight.
Bad pointing and tracking during flats and focus frames in the evening
turned out to be due to the fact that we had managed to slew four
times without crossing an altitude magnasensor.  Once a few sensors
was crossed, the telescope pointing was fine.
                            OBSERVER COMMENTS
                                FOCUS LOG
                               JULY 11 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp     Dir MPH  filt  FWHM "
01:10  SPIcam   -100(6329)  202  55  7.9/8.4     75  23    V    3.1
02:15  SPIcam    -50(6299)   79  64  7.8/7.8     74  21    V    2.8
#First temp is air, second temp is telescope.
                                 WEATHER
                               JULY 11 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    57    46     11    76  (ENE)    541     clear      none
     17:01    58    44      9    71  (ENE)    540     clear      none
     18:01    55    43     14    77  (ENE)    559     clear      none
     19:01    54    44     15    70  (ENE)    621     clear      none
     20:01    50    43     24    62  (ENE)    578     clear      none
     21:01    48    44     20    67  (ENE)    804     clear      none
     22:01    48    44     21    71  (ENE)    874     clear      none
     23:01    47    44     23    71  (ENE)   1081     clear      none
     00:01    47    43     20    73  (ENE)   1251     clear      none
     01:01    46    41     18    76  (ENE)   1156   few clouds   none
     02:01    46    39     15    70  (ENE)    926    ptly cldy   none
     03:01    48    35     14    88  (E)      783    ptly cldy   none
     04:01    48    33     11    79  (ENE)    770   mstly cldy   none
     05:01    48    32     10    87  (E)      675    ptly cldy   none
     06:01    47    36     12    87  (E)      824    ptly cldy   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.
- RM