From: Russet McMillan
Subject: 3.5m Night Log 20020420
Date: Sun, 21 Apr 2002 06:30:38 -0600 (MDT)
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                         Saturday, April 20, 2002
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)              INSTRUMENT     START  FINISH
 -------------------------------------------------------------------
 C.Stubbs      C.Stubbs                 SPIcam         19:40   20:20
                                                       21:35   00:53
 M.Strauss     X.Fan                    DISII          01:07   06:00
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 DD02/R      20:33  01:00   0   1.0   0    0    0   3.4   0    0    0
 PU05/R      01:00  05:32   0    0    0    0   2.4  2.1   0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 Despite dust levels being high near sunset, I opened around 19:40 to get
some twilight sky flats for Chris' program.  The wind was dropping rapdily
and dust seemed to follow it as twilight went on.  But the dust got me, of
course, a round of flats into the series, so I closed up at 20:20.  We
opened again just after 21:30 when the dust abated.  Chris observed some
Messier objects to impress the folks at UW for Astronomy Day, then moved
on to imaging Kuiper belt objects.  Seeing varied around 1.2 arcsec.
 2nd Half Observing Specialist: R.McMillan
 Second half had occasional cirrus and moderate to poor seeing,
 noticeably worse when we were pointed into the wind.  Despite the
 passing clouds, the observers managed to get good spectra of a number
 of objects, and everything went very smoothly.
                        ------- FAILURE LOG -------
 PROG/INST/FAILURE MODE  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
 ---------------------------------------------------------------------
 21:56  SPIcam      50(755)    171 67   5.6/7.8    267  20   V     1.07
 22:20  NA2gdr   -3273(57726)  88  58   5.5/6.7    284  25   clear 1.06
 01:11  DISslit     50(466)    122 78   3.9/4.3    302  20   -     1.05
 01:13  NA2gdr   -2546(54453)  123 78   3.8/4.4    302  20   R     1.16
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    52     8     30   262  (W)     2156  MstlyClr    dust
     17:01    51     8     26   267  (W)     3195  MstlyClr    dust
     18:01    53    10     30   248  (WSW)   3309  MstlyClr    dust
     19:01    50     7     11   271  (W)     3047  MstlyClr    dust
     20:01    45     3     22   276  (W)     7603  MstlyClr    dust
     21:01    43     1     22   270  (W)     4298  MstlyClr    dust
     22:01    42    -1     17   264  (W)     2156  MstlyClr    none
     23:01    42    -2     21   272  (W)     1283  MstlyClr    none
     00:01    41    -3     21   292  (WNW)   1591  MstlyClr    none
     01:01    39    -4     16   302  (WNW)   1454  MstlyClr    none
     02:01    39    -4     13   303  (WNW)   1040   cirrus     none
     03:01    40    -5     20   293  (WNW)    996   cirrus     none
     04:01    40    -6      9   272  (W)      588   cirrus     none
     05:01    40    -8     22   302  (WNW)    952   cirrus     none
     06:01    39    -7      8   263  (W)      801  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 > 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: 2.5.5