From: Russet McMillan
Subject: 3.5m Night Log 20050405
Date: Wed,  6 Apr 2005 06:26:23 -0600 (MDT)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Tuesday, April 5, 2005
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 P.McGehee       G.Stringfellow,P.McGehee  Echelle     19:30  21:24
 M.Oguri         D.Johnston             DIS            21:28  00:58
 J.Tumlinson     J.Tumlinson            DIS            01:01  05:48
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 NM01/R      20:21  21:21   0    0    0    0   1.0   0    0    0    0
 PU04/R      21:21  01:00   0    0    0    0   3.6   0    0    0    0
 UC02/R      21:20  05:52   0    0    0    0   4.7  0.2   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Clear skies all night with moderate to poor seeing.  Dust was
 occasionally borderline, but an adjustment of the fan configuration
 kept it to acceptable levels inside the dome.  There was one crash
 of the echelle guider during evening twilight, and some evidence of
 drift in tracking when I was not able to find a guide star, but
 otherwise everything worked well.  The drift was not bad enough to
 cause image distortion in short exposures; it was only a problem for
 unguided exposures longer than 15 minutes.
                      ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
      (SEGDFNVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
 NM01     E          I/S     19:18  19:23   Echelle SV crash
                 ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 20:00 Echelle     -5(193)     235 52  3.6/4.0    10   6    ND2   1.78
 21:35 dis-slit    0(915)      48  73  3.9/3.3    8    15   -     1.9
 21:37 NA2gdr      -2509(28490)47  73  3.8/3.3    350  12   R     1.28
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    40     8     10   318  (NW)    1820   clear      none
     17:01    42     8      8   282  (WNW)   1627   clear      none
     18:01    41     6     21   330  (NNW)   1328   clear      none
     19:01    40     4     20   319  (NW)    1587   clear      none
     20:01    39     4     10     3  (N)     2098   clear      none
     21:01    38     4     16    14  (NNE)   2862   clear      none
     22:01    38     5     10    51  (NE)    2857   clear      none
     23:01    37     5     15   357  (N)     2490   clear      none
     00:01    37     4     19    16  (NNE)   2359   clear      none
     01:01    36     5     18    18  (NNE)   2325   clear      none
     02:01    35     8     22    28  (NNE)   1503   clear      none
     03:01    35     8     13    27  (NNE)   1356   clear      none
     04:01    35     9     19    66  (ENE)   1329   clear      none
     05:01    33    12     12    80  (E)     1273   clear      none
     06:01    33    11      5    86  (E)     1245   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 TCC version: 2.7.2  Current TUI version: TUI 0.94