From: Russet McMillan
Subject: 3.5m Night Log 20040516
Date: Mon, 17 May 2004 05:37:47 -0600 (MDT)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                          Sunday, May 16, 2004
                                                          ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 D.York          V.Kulkarni,D.York,     GFP            20:00  05:50
                 E.Wassell, C.Grady
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 UC06/R      20:57  05:02   0    0   0.5   0   7.6   0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Weather tonight was better than last night, but we still had waves
 of thin to moderate cirrus passing through at intervals.  Seeing was
 good, subarcsecond for most of the night, but deteriorated to
 moderate/poor later in the morning.
 After the evening twilight flats were finished, we discovered that a
 high bit had gotten stuck on, causing the sky levels to appear
 higher than they really were.  The bit remained stuck for the first
 few science images, then fixed itself.  After that, the instrument
 behaved well and so did the telescope.
                          ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEGDFVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
 UC06     F          I/S     20:57  21:25   stuck bit on GFP
                 ---------------- FOCUS LOG ---------------
                                         Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 21:35 gfp         0(1645)     243 53  14.2/14.5  217  13   B     1.15
 21:40 NA2gdr    -1500(49500)  245 52  14.4/14.5  219  11   R     1.1
                ------------- WEATHER LOG ----------------
                                  Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    67    27      8   249  (WSW)    829  mstly cldy   none
     17:01    65    26      9   232  (SW)     684  mstly cldy   none
     18:01    63    27     14   249  (WSW)    813  ptly cldy    none
     19:01    62    24     13   233  (SW)     931  mstly clr    none
     20:01    57    18      8   221  (SW)    1332   cirrus      none
     21:01    57    21     12   214  (SW)    1447   cirrus      none
     22:01    58    21     13   229  (SW)    1484   cirrus      none
     23:01    58    19     16   234  (SW)    1326   cirrus      none
     00:01    57    19     13   232  (SW)    1523  ptly cldy    none
     01:01    57    18     12   214  (SW)    1637  ptly cldy    none
     02:01    56    17     14   196  (SSW)   1503  ptly cldy    none
     03:01    55    16     15   202  (SSW)   1464   cirrus      none
     04:01    55    13     11   248  (WSW)   1345   cirrus      none
     05:01    55     9     10   268  (W)     1174  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-0.843