Date: Mon, 4 Oct 2004 05:49:59 -0600 (MDT)
From: John Barentine
Subject: 3.5m Night Log 20041003
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Sunday, October  3, 2004
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 P.Szkody        P.Szkody               DIS            19:00 00:58
 M.Agueros       M.Agueros              DIS            00:05 04:30
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 UW11/R      19:38  01:00   0    0    0    0   2.3  3.1   0    0    0
 UW07/R      01:00  06:07   0   1.6   0    0    0   3.5   0    0    0
 note: scheduled times listed include instrument change time
                   ------------- ACTIVITY LOG --------------
  1st Half Observing Specialist: B.Ketzeback
  First half went very smoothly. No problems. Nice to get back on the
sky after this past weeks weather.
  2nd Half Observing Specialist: J.Barentine
  Second half was generally quiet.  Only trouble was anomalously high
background counts on the guider that interfered with guiding.  There was
no obvious source of this background, which was ~1-2k higher than normal.
The camera temperature was normal and we were not pointed especially near
the moon.  The observers' exposures were fairly short, so the intermittent
guiding didn't pose a serious threat.
 The humidity began rising rapidly toward 04:20.  We closed shortly
thereafter.  By 05:45 there was dense fog outside as the humidity
approached 100%.  We never re-opened.
                      ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEGDFVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
                 ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 19:25 dis-slit    -180(1167)  195 77  10.7/13.4  276  8    -     1.01
 19:27 NA2gdr    -1000(30000)  196 77  10.5/13.4  273  7    R     1.1
                ------------- WEATHER LOG ----------------
                                   Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    60    44      7   265  (W)        0   clear     none
     17:01    59    41     14   224  (SW)       0   clear     none
     18:01    55    37      8   277  (W)        0   clear     none
     19:01    51    38      9   280  (W)        0   clear     none
     20:01    51    42     11   269  (W)        0   clear     none
     21:01    52    39     10   274  (W)        0   clear     none
     22:01    53    36      7   257  (WSW)      0   clear     none
     23:01    53    36      6   263  (W)        0   clear     none
     00:01    52    38      7   263  (W)        0   Clear     none
     01:01    51    40      7   211  (SSW)      0   Clear     none
     02:01    52    42     12   203  (SSW)      0   Clear     none
     03:01    52    43     13   216  (SW)       0   Clear     none
     04:01    52    44     11   183  (S)        0   Clear     none
     05:01    50    48      7   190  (S)        0   PtlyCldy  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
     Telescope drives operational. Current Remark version: 2.85b
     Current TCC version: 2.7.2  Current TUI version: TUI 0.90