From: Russet McMillan
Subject: 3.5m Night Log 20020917
Date: Wed, 18 Sep 2002 06:25:30 -0600 (MDT)
                         Apache Point Observatory
                         3.5m Telescope Night Log
                       Tuesday, September 17, 2002
                                                           ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT     START  FINISH
 -------------------------------------------------------------------
 E. Turner     W. Ketzeback, J. Dembicky    SH         --:--  --:--
 C. Blake      C. Blake, D. Spergel,        GRIM       21:50  05:15
               Y. Loh
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 PC04/O      20:00  20:40   0   0.7    0    0    0   0    0    0    0
 PC06/R      20:40  05:55  0.7  1.2    0    0   1.2 6.1   0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: W. Ketzeback, J. Dembicky
Took Shack Hartmann Reference frames but before we could go to our first
star the sky clouded and looked threatening so we closed up. Opened at
21:50.
 2nd Half Observing Specialist: R.McMillan
 Thick clouds around midnight precluded science for some time but did
 not seem particularly threatening.  I was about to close simply
 because nothing was being accomplished, when the clouds began to
 lighten.  Observations resumed and everything went smoothly until a
 bank of lower-altitude clouds arrived after 5:00 am, accompanied by a
 spike in humidity.  The dome was closed at 05:15.
                        ------- FAILURE LOG -------
 PROG   INST       FAILURE      TIME
        S/E/G/D/O  TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 22:19   GRIM-f/5    60(940)  121  63    13.3/14.4  272 16   J    0.66
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    62    43     14   256  (WSW)    315 Prtly Cldy    None
     17:01    61    39     11   276  (W)      333 Prtly Cldy    None
     18:01    63    40     19   255  (WSW)    322 Prtly Cldy    None
     19:01    59    39     18   265  (W)      405 Prtly Cldy    None
     20:01    58    39     16   268  (W)      491 Mstly Cldy    None
     21:01    58    42     13   258  (WSW)    470 Mstly Cldy    None
     22:01    57    43     17   267  (W)      463 Prtly Cldy    None
     23:01    57    43     15   277  (W)      443 Prtly Cldy    None
     00:01    56    42     17   273  (W)      322  ptly cldy    none
     01:01    56    41     18   272  (W)      312  mstly cldy   none
     02:01    55    42     19   271  (W)      248  ptly cldy    none
     03:01    54    43     16   283  (WNW)    231   cirrus      none
     04:01    53    44     17   262  (W)      210  mstly clr    none
     05:01    52    45     22   285  (WNW)    279  ptly cldy    none
     06:01    51    49     23   266  (W)      306   cloudy      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 > 1u per 0.1 cubic feet.
                               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: 2.82
   Current guide software version: GIm Ctrlv4.1b2
   Current TCC version: 2.6.6