From: Russet McMillan
Subject: 3.5m Night Log 20030624
Date: Wed, 25 Jun 2003 06:06:44 -0600 (MDT)
                         Apache Point Observatory
                         3.5m Telescope Night Log
                          Tuesday, June 24, 2003
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 P.Yoachim      P.Yoachim               DIS            20:15  01:00
 R.Kron         R.Kron,L.Grodnicki      DIS            01:00  05:10
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW02/R      21:19  01:00   0    0    0    0   3.7   0    0    0    0
 UC08/R      01:00  04:53   0    0    0    0   2.0  1.9   0    0    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 A nice peaceful night, with clear skies, variable seeing, and no
 problems.  The only oddity was some strange focus values: it started
 out negative and moved up towards zero as usual, but later plunged
 back down to -200.  The most likely reason was that I closed the
 louvers and changed fan configurations (press on, telex on, intex
 off) for a borderline dust event in the evening, then I neglected to
 turn the intex fans back on.  But I was surprised that the lack of
 intex fans would have such a strong effect (especially in the
 negative direction) if they were turned off after the telescope was
 reasonably cool.
                     ------- 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
 ---------------------------------------------------------------------
 21:13 DISslit     -125(1078)  253 58  17.0/18.7  223  17   -     1.08
                --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    76    12     25   214  (SW)     695   clear     none
     17:01    72    12     23   245  (WSW)    785   clear     none
     18:01    72    11     23   247  (WSW)    904   clear     none
     19:01    69    11     13   193  (SSW)    877   clear     none
     20:01    65     9     19   220  (SW)    1046   clear     none
     21:01    62     6     18   217  (SW)    1664   clear     none
     22:01    64     5     14   221  (SW)    2164   clear     none
     23:01    63     5     11   251  (WSW)   1977   clear     none
     00:01    63     3      8   239  (WSW)    552   clear     none
     01:01    62     4      6   263  (W)      555   clear     none
     02:01    62     5      2   254  (WSW)    575   clear     none
     03:01    61     6      4   196  (SSW)    556   clear     none
     04:01    59    12      5   260  (W)      622   clear     none
     05:01    59    12      4   187  (S)      627   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
   Primary, secondary, and tertiary mirrors in place and collimated.
   Primary support system operational. Mirror ventilation system in
   place.
   Telescope drives operational. Current Remark version: 2.85b
   Current guide software version: GIm Ctrlv4.1b4
   Current TCC version: 2.7.0  Current TUI version: 0.66