From: Russet McMillan
Subject: 3.5m Night Log 20040118
Date: Mon, 19 Jan 2004 05:57:18 -0700 (MST)
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Sunday, January 18, 2004
                                                          ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 T.Goto          T.Goto,K.Chiu,         DIS            19:10  21:20
                 E.Hoversten
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 JH04/O      18:19  06:08  9.6  1.0   0    0   1.2   0    0    0    0
  note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 Clouds thinned toward sunset yielding clear skies after dark.  Humidity,
however, was high; we watched it slowly decline until it seemed safe to
open just after 19:00.  Turned on the fans at 18:45 to cool once the
humidity seemed to level out at 75%.  Closed at 21:20 just after the
observer finished a science exposure and the humidity became unacceptably
high.
 2nd Half Observing Specialist: R.McMillan
 During second half, the humidity hovered above the limit with just a
 couple of downward excursions to increase our frustration.
                        ------- 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
 ---------------------------------------------------------------------
 19:21 DISslit     0(728)      178 79  -3.1/-0.9  351  9    -     0.95
 19:23 NA2gdr      625(47625)  180 79  -3.3/-1.0  6    13   R     0.92
                 -------------- WEATHER LOG ----------------
                                 Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    28    23      1   278  (W)        0  PtlyCldy    none
     17:01    26    22     10   344  (NNW)      0  PtlyCldy    none
     18:01    25    22      4   358  (N)        0  MstlyClr    none
     19:01    26    20      5     1  (N)        0   Clear      none
     20:01    26    21      8   336  (NNW)      0   Clear      none
     21:01    25    21      9   347  (NNW)      0   Clear      none
     22:01    25    23      8   330  (NNW)      0   Clear      none
     23:01    25    22      1    21  (NNE)      0   Clear      none
     00:01    25    24      0   296  (WNW)      0   Clear      none
     01:01    25    24      7   354  (N)        0   clear      none
     02:01    25    23      9   354  (N)        0   clear      none
     03:01    25    23      6   330  (NNW)      0   clear      none
     04:01    25    23      8   317  (NW)       0   clear      none
     05:01    25    24     15   329  (NNW)      0   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 > 1u per 0.1 cubic feet.
                               TELESCOPE STATUS
   Telescope drives operational. Current Remark version: 2.85b
   Current guide software version: guider v4.1b4
   Current TCC version: 2.7.2  Current TUI version: TUI-0.81