Date: Mon, 24 May 1999 06:15:56 -0600 (MDT)
From: Russet McMillan
Subject: 3.5m Night Log 990523
                           SUNDAY MAY 23, 1999
                         APACHE POINT OBSERVATORY
                              OBSERVING  LOG
                                                          ACTUAL
ASTRONOMER      OBSERVER(S)        INSTRUMENT   DATE   START FINISH
Krisciunas      Krisciunas, McMillan SPIcam     5/23   21:38 22:28
Strauss         Fan                   DIS     5/23-24  22:53 00:45
Kron            Holden               GRIM       5/24   01:10 04:22
 INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
I/RS/DN    START FINISH   D    B    D    B    D    B   USE   D    B
UW02/S     21:38 22:38    -   0.6   -    0    -   0.4   0    -    0
PU01/R     22:38 01:10    -   2.5   -    0    -    0    0    -    0
UC07/R     01:10 04:22   1.3  1.9   0    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)
Observing specialist: R. McMillan
A brief thunderstorm before sunset delayed opening the telescope for
cooling.  The telescope was opened at 19:00, but closed again at 19:50
due to threatening clouds.  When those clouds passed to the north, the
telescope was opened again at 20:50, and we were able to obtain some
limited data for UW02, before closing again at 22:04 due to clouds,
nearby lightning, and rising humidity.  The clouds cleared off shortly
after 1:00 am, but the dewpoint bounced around near the limit until
dawn.
                            OBSERVER COMMENTS
                                FOCUS LOG
                               MAY 23 1999
						 Wind
Time   Inst        Focus     Az  El   #Temp    Dir  MPH  filt  FWHM "
21:05  SPIcam   -50(6538)   271  41  9.9/10.7   74   25   R    2.02
21:10  guider  -792(49206)  274  36  9.9/10.4   73   24
#First temp is air, second temp is telescope.
                                 WEATHER
                               MAY 23 1999
                               Wind
     Time   Temp F Dewp F  MPH  Direction    Dust      Sky      Precip.
     16:01    58    40     16   106  (ESE)   1049    ptly cldy   none
     17:01    56    39      9    79  (ENE)    997     cloudy     none
     18:01    52    43     17    80  (E)      920     cloudy     rain
     19:01    53    41     22    80  (E)      856    ptly cldy   none
     20:01    51    41     16    85  (E)     1017    ptly cldy   none
     21:01    50    43     22    73  (ENE)   1212    ptly cldy   none
     22:01    50    44     21    83  (E)     1547   mstly cldy   none
     23:01    49    45     14    82  (E)     1829   mstly cldy   none
     00:01    49    45     14   106  (ESE)   2033   mstly cldy   none
     01:01    49    44     15   109  (ESE)   1760    ptly cldy   none
     02:01    48    44     20   110  (ESE)   1733     clear      none
     03:01    48    45     21    85  (E)     1728     clear      none
     04:01    48    45     21   113  (ESE)   2094     clear      none
     05:01    48    45     18   119  (ESE)   2283     clear      none
     06:01    48    44     22   133  (SE)    2408     clear      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: 2.52
Current guide software version: GIm Ctrlv3.0b17.
- Russet McMillan