Date: Tue, 25 May 2004 05:51:04 -0600 (MDT)
From: John Barentine
Subject: 3.5m Night Log 20040524
                        Apache Point Observatory
                        3.5m Telescope Night Log
                          Monday, May 24, 2004
                                                          ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 G.Richards      G. Richards,J.Hennawi  DIS            --:--  --:--
 J.Hennawi       J.Hennawi              DIS            --:--  --:--
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 PU06/R      21:03  23:03   0   2.0   0    0    0    0    0    0    0
 PU01/R      23:03  04:57  4.1  1.8   0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Barentine
 Thickening cirrus toward sunset; open to cool at 19:35.  Near the end of
twilight the clouds thinned just enough to allow focusing of the
telescope, but then conditions deteriorated.  The rest of the night saw
wave after wave of fairly dense cloud wafting over the site.  We remained
open, seeing no threat of rain on radar, but did no observing.
                          ------- 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
 ---------------------------------------------------------------------
 20:45 DISslit     50(1552)    184 72  14.9/15.7  266  14   -     1.28
                ------------- WEATHER LOG ----------------
                                  Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    67    20     23   245  (WSW)    835  PtlyCldy    none
     17:01    66    20     18   242  (WSW)    816  PtlyCldy    none
     18:01    66    18     11   245  (WSW)    769  PtlyCldy    none
     19:01    62    14     11   250  (WSW)    837  MstlyCldy   none
     20:01    59    11     19   266  (W)     1144  MstlyCldy   none
     21:01    59    11     14   261  (W)     1006  MstlyCldy   none
     22:01    59    12     18   261  (W)      940  MstlyCldy   none
     23:01    58    13     14   267  (W)      885  MstlyCldy   none
     00:01    57    14     14   260  (W)      747  MstlyCldy   none
     01:01    57    14     15   254  (WSW)    787  MstlyCldy   none
     02:01    56    14     17   266  (W)      934  MstlyCldy   none
     03:01    54    14     10   269  (W)     1109  MstlyCldy   none
     04:01    54    14     10   273  (W)     1191  MstlyCldy   none
     05:01    53    15     12   269  (W)     1088  MstlyCldy   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