From: Russet McMillan
Subject: 3.5m Night Log 20040328
Date: Mon, 29 Mar 2004 05:57:18 -0700 (MST)
                          Apache Point Observatory
                          3.5m Telescope Night Log
                           Sunday, March 28, 2004
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 G.Stringfellow  G.Stringfellow         SPIcam         18:20  21:12
 T.Harrison      T.Harrison             DIS            21:27  00:10
 G.Stringfellow  G.Stringfellow         Echelle        00:15  05:35
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 DD05/R      19:15  21:15   0    0    0    0    0   2.0   0    0    0
 DD04/R      21:15  00:15   0    0    0    0    0   3.0   0    0    0
 CU04/R      00:15  05:01   0    0    0    0   3.2  1.6   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 Jack came in during checkout and helped me finish that up quickly, so a
big "thanks" to him for that.  We were open by 17:30 to cool and on the
sky for SPIam twilight flats at sunset.  The winds turned immediately
eastward after sunset and caused predictably bad seeing thereafter, in the
3-4 arcsecond range.  There was an evident problem with the temperature of
the NA2 gcam (see PR 2004034) which made guiding very difficult (read:
impossible) in combination with the seeing.  A few waves of passing clouds
from time to time and much cooler temperatures than other recent nights,
but otherwise a fine first half.
 2nd Half Observing Specialist: R.McMillan
 Second half was very peaceful, with moderate to poor seeing.  A few
 thin clouds peeped in and then moved away.  Everything worked
 perfect.y.
                         ------- 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
 ---------------------------------------------------------------------
 19:29 SPIcam      100(1303)   111 81  6.6/6.7    21   20   I     0.67
 19:35 NA2gdr      1667(50667) 116 82  5.4/6.7    35   15   R     0.78
 00:30 Echelle     -12(101)    311 56  2.5/2.4    73   18   ND2   1.31
 # - First temperature is air, second temperature is the telescope.
                 ------------- WEATHER LOG ----------------
                                 Wind                       Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    46     2     10    11  (N)        0   Clear      none
     17:01    46     1     12   344  (NNW)      0   Clear      none
     18:01    44     1     16    16  (NNE)      0   Clear      none
     19:01    45    -7     16    25  (NNE)      0   Clear      none
     20:01    43   -10     18    11  (N)        0   Clear      none
     21:01    44   -13     17    26  (NNE)      0   Clear      none
     22:01    38     4     16    45  (NE)       0   Clear      none
     23:01    37     5     15    76  (ENE)      0   Clear      none
     00:01    36     5     16    75  (ENE)      0   Clear      none
     01:01    37     5     16    71  (ENE)      0  mstly clr   none
     02:01    36     1     10    87  (E)        0  mstly clr   none
     03:01    36     2     14    79  (ENE)      0   clear      none
     04:01    36     5      8    82  (E)        0   clear      none
     05:01    33     6     15    76  (ENE)      0  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.
    Note: The weather tower dust counter is out of commision
                                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-0.842