From: Russet McMillan
Subject: 3.5m Night Log 20040821
Date: Sun, 22 Aug 2004 06:02:58 -0600 (MDT)
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Saturday, August 21, 2004
                                                          ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 B.Gillespie     R.McMillan,C.Loomis    DIS,Na2Gdr,    20:30 05:40
                                        SH
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 EN02/O      20:37  05:36   0    0    0    0   6.6  2.4   0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Tonight was mostly clear, with a bit of haze in the evening that
 eventually improved to apparently photometric conditions.  Seeing
 varied from subarcsecond to about 1.5 arcseconds on very short
 timescales, making this a bad night for focus tests but otherwise
 quite usable.  Second half had more stable seeing and light winds
 until about 05:30, when the humidity started to rise and the seeing
 degraded.
 Tasks completed: DIS instrument block, confirmation of slitview
 offset recommendations for Remark and TUI, DIS throughput
 measurements, work adapting na2point script for new guider (not
 finished -- this script is broken for now!), tests and reports on
 several aspects of new guider behavior, two SH altitude sweeps with
 varying tertiary control schemes.
                      ------- 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
 ---------------------------------------------------------------------
 21:01 DISslit     110(1526)   79  58  14.3/-10.4 267  6    -     1.11
 02:21 S-H         -130(1910)  140 81  13.5/-10.4 334  4    -     1.0
                ------------- WEATHER LOG ----------------
                                  Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     17:01    63    39      7   276  (W)   118331  ptly cldy   none
     18:01    64    40     10   267  (W)   116296  ptly cldy   none
     19:01    65    41      6   253  (WSW) 118537  ptly cldy   none
     20:01    59    37      8   274  (W)   121829  mstly clr   none
     21:01    58    37      5   264  (W)   120055  mstly clr   none
     22:01    57    36      6   267  (W)   120828  mstly clr   none
     23:01    57    35      8   269  (W)   122005  mstly clr   none
     00:01    56    35      8   267  (W)   121467  mstly clr   none
     01:01    57    36      5   272  (W)   120775  mstly clr   none
     02:01    56    36      5   286  (WNW) 125145   clear      none
     03:01    57    36      3   265  (W)   122233   clear      none
     04:01    54    37      8   306  (NW)  121908   clear      none
     05:01    53    37      5   208  (SSW) 123096   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 TCC version: 2.7.2  Current TUI version: TUI 90b2