Date: Tue, 26 Aug 2003 06:03:01 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20030825
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Monday, August 25, 2003
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 A.Uomoto      W.Zheng, K.Chiu,         DISII          00:50  05:43
               E.Hoversten
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 JH03/R      20:33  05:38  4.2   0    0    0   4.5  0.4   0    0    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
 21:15 opened the enclosure and attempted to focus DIS.  Clouds moved in
 shortly afterward and stopped me for about 30 mins.  I finally was able
 to focus on a star around 21:45, with clouds still in the sky.  I turned
 the telescope over to the observers at 21:55 to attempt to get data thru
 the clouds.
 The clouds thinned around 00:30 and I re-opened the enclosure around
 00:50 hoping it wasn't another sucker hole.  Of course about this time
 the humidity started to rise as well, but I got DIS focused and handed
 the instrument over to the observers.
 Although the humidity hovered around closure levels the threat of precip
 seemed minimal and I allowed the observers to get their data.  They
 reported that the telescope seemed to drift (upward) about an arc sec.
 every couple of minutes.  They were pointing in the SW.
 The weather co-operated for the later part of the night and the clouds
 nicely moved away.  The humidity was still elevated, but below closure
 levels.
                     ------- 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
 ---------------------------------------------------------------------
 21:52  DISslit      80(1046) 115  65   13.3/14.6   80  10  none  1.11
 00:52  DISslit     130(1053) 100  53   11.7/12.8   117  9  none  1.09
               -------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     17:01    57    49     12   134  (SE)     557   Cloudy    Lt. Rain
     18:01    58    48      1   198  (SSW)    327   Cloudy      none
     19:01    58    48      0   114  (ESE)    416   Cloudy      none
     20:01    57    47      4    89  (E)      383   Cloudy      none
     21:01    56    48      7    85  (E)      389   Pt.Cldy     none
     22:01    56    47      9    81  (E)      344   Cloudy      none
     23:01    56    46     16   124  (SE)     245   Cloudy      none
     00:01    55    47     14   112  (ESE)    213   Pt.Cldy     none
     01:01    53    49      5   114  (ESE)    343   Pt.Cldy     none
     02:01    52    49      6    99  (E)      479   Pt.Cldy     none
     03:01    54    47      4   322  (NW)     326   Clear       none
     04:01    53    46      2   350  (N)      321   Clear       none
     05:01    53    47      6     8  (N)      331   Clear       none
     06:01    54    46      7    32  (NNE)    289   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? what guider?
   Current TCC version: 2.7.1  Current TUI version: TTUI