From: Russet McMillan
Subject: 3.5m Night Log 20040412
Date: Tue, 13 Apr 2004 06:39:43 -0600 (MDT)
                          Apache Point Observatory
                          3.5m Telescope Night Log
                           Monday, April 12, 2004
                                                            ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 E.Ellingson     E.Ellingson            DIS            07:35  00:58
 N.Silvestri     N.Silvestri            DIS            00:59  06:15
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 CU01/R      20:27  01:00   0    0    0    0   4.5   0    0    0    0
 UW04/R      01:00  05:40   0    0    0    0   2.6  2.1   0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 The telescope was opened for cooling for about half an hour during
 checkout, then closed for the observer's cals.  We re-opened right
 at sunset and got going as soon as it was dark enough to focus.
 Skies were mostly clear, with moderate but variable seeing.
 Humidity wandered up several times toward the limit, especially once
 the telescope had cooled to below the air temperature.
 There was one crash of the NA2 guider Mac, which was resolved with
 no time lost.  Otherwise, 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
 ---------------------------------------------------------------------
 20:00 DISslit     -75(846)    124 59  -0.5/2.7   221  2    -     1.41
                ------------- WEATHER LOG ----------------
                                  Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    34    26      7   302  (WNW)    720  ptly cldy   none
     17:01    36    19      7   261  (W)      712  ptly cldy   none
     18:01    36    19      1   295  (WNW)    664  mstly clr   none
     19:01    35    23      9   284  (WNW)    565    clear     none
     20:01    31    26      4   206  (SSW)    696    clear     none
     21:01    32    20      7   280  (W)      654    clear     none
     22:01    32    19      9   302  (WNW)    618    clear     none
     23:01    32    23      7   275  (W)      772    clear     none
     00:01    33    26      7   284  (WNW)    772  mstly clr   none
     01:01    33    26      7   321  (NW)     766    clear     none
     02:01    31    24      6   208  (SSW)    985    clear     none
     03:01    33    24      4   278  (W)     1061    clear     none
     04:01    32    24      2   202  (SSW)   1118    clear     none
     05:01    33    25      4   276  (W)      977    clear     none
     06:01    33    24      3   288  (WNW)   1037    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-0.842