Date: Tue, 9 Sep 2003 06:06:15 -0600 (MDT)
From: John Barentine
Subject: 3.5m Night Log 20030908
                         Apache Point Observatory
                         3.5m Telescope Night Log
                         Monday, September 8, 2003
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 G.Richards     G.Richards, P.Hall      GRIM-f/5       19:50  05:40
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 PU04/R      20:13  05:49   0    0    0    0   0.3  9.3   0    0    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Barentine
 The weather late this afternoon being better than in previous days at the
same hour, we opened shortly after 18:00 to begin cooling.  By 20:00, we
were on the sky.
 The night was mostly quiet.  At 00:40 and then again around 02:35, the
observers reported GRIM dropping quadrants but evidently recovering on its
own within 1-2 frames.  It happened on a few more occasions but did not
require cycling the instrument.
 Just after 04:00, the site compressed air dewpoint sensor alarm tripped
(see PR ID 2003139).  I filed the PR, sent email to techstaff and silenced
the alarm for the moment with a piece of tape over the reset switch.
Before leaving for the night, I removed the tape so the first of the
daystaff would find the alarm.
 Weather was good and seeing stable and subarcsecond throughout the night.
                     ------- 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
 ---------------------------------------------------------------------
 19:49 GrIm2(f/5)  175(1318)   185 77  15.3/16.9  264  5    J     0.57
 22:32 GrIm2(f/5)  100(1264)   323 46  16.0/15.5  190  8    J     0.86
               -------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    65    37     15   286  (WNW)    395  PtlyCldy    none
     17:01    65    38      0   238  (WSW)    330  PtlyCldy    none
     18:01    67    38     10   229  (SW)     297  MstlyClr    none
     19:01    62    36      6   269  (W)      388  MstlyClr    none
     20:01    60    37      4   254  (WSW)    443  MstlyClr    none
     21:01    61    37      5   252  (WSW)    456  MstlyClr    none
     22:01    60    37      8   218  (SW)     405  MstlyClr    none
     23:01    61    37     10   190  (S)      471  MstlyClr    none
     00:01    60    37      6   186  (S)      463  MstlyClr    none
     01:01    59    37      6   239  (WSW)    415  MstlyClr    none
     02:01    59    38      7   207  (SSW)    460  MstlyClr    none
     03:01    58    39      6   222  (SW)     418  MstlyClr    none
     04:01    57    39      4   225  (SW)     449  MstlyClr    none
     05:01    58    40      3   218  (SW)     418  MstlyClr    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