From: Russet McMillan
Subject: 3.5m Night Log 20040418
Date: Mon, 19 Apr 2004 06:07:18 -0600 (MDT)
                          Apache Point Observatory
                          3.5m Telescope Night Log
                           Sunday, April 18, 2004
                                                            ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 P.Yoachim       P.Yoachim              DIS            19:55  02:00
                                                       04:25  05:45
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 UW03/R      20:32  05:33  2.4   0    0    0   6.6   0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 High clouds of variable thickness caused trouble for most of the
 night.  During first half the observer was able to shoot through the
 clouds, although flux was very low.  After midnight the clouds grew
 thicker; we closed for a while until the edge of the system finally
 reached us, then re-opened for the last hour of the night.
 Everything worked perfectly.
                          ------- 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
 ---------------------------------------------------------------------
 20:11 DISslit     -75(1153)   187 60  8.6/9.9    266  11   -     1.35
                ------------- WEATHER LOG ----------------
                                  Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    55    11     22   266  (W)     1364  ptly cldy    none
     17:01    55    16     16   248  (WSW)   1262  ptly cldy    none
     18:01    51    13     21   225  (SW)    1519  mstly cldy   none
     19:01    48    14     18   234  (SW)    1914  mstly cldy   none
     20:01    47    12     13   245  (WSW)   1858  mstly cldy   none
     21:01    46    12      9   265  (W)     2111  mstly cldy   none
     22:01    47    12     10   260  (W)     2073  mstly cldy   none
     23:01    47    16     10   234  (SW)    2214  mstly cldy   none
     00:01    47    14      8   259  (W)     2032  mstly cldy   none
     01:01    47    18      6   261  (W)     2233  mstly cldy   none
     02:01    47    17      7   233  (SW)    2190   cloudy      none
     03:01    47    17     11   210  (SSW)   2064   cloudy      none
     04:01    46    18     14   217  (SW)    2126  ptly cldy    none
     05:01    47    18     10   227  (SW)    2144   cirrus      none
     06:01    45    19      8   197  (SSW)   1822  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
     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-0.842