From: Russet McMillan
Subject: 3.5m Night Log 20010417
Date: Wed, 18 Apr 2001 06:18:11 -0600 (MDT)
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                       Tuesday, April 17th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 --------------------------------------------------------------------
 R.Walterbos   D.Thilker               SPIcam          19:55  00:50
 S.Hawley      S.Hawley,K.Covey        DIS-low         01:20  03:45
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 NM01/R      20:31 01:00    0    0   0.1   0   4.4   0    0    0    0
 UW04/R      01:00 05:34   0.4  1.5  0.1   0   2.6   0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 1st half Observing Specialist: Jack Dembicky
 Opened louvers / cooling fans turned on at 17:30.  Opened enclosure at
 19:50.
 The rotator overshot in the CW (+) direction tonight.  Russet was in
 early and adjusted the parameters at 21:50 since it seemed to be getting
 worse. 0.1h lost to fixing the problem.
 The seeing started out sub arc sec but seemed to get worse (about
 3.0 arc sec, confirmed by SDSS) around 21:25 and then improved to 1.5
 arc sec.
 2nd half Observing Specialist: Russet McMillan
 The humidity started to become threatening shortly before the program
 changeover, but it wasn't necessary to close right away.  A command
 collision during the instrument change and some more tests of the
 rotator took a few minutes of potential observing time.  We managed
 to get some science done in spite of poor seeing (~2 arcseconds) and
 borderline humidity, until the dewpoint finally got too high and we
 closed at 03:45.
         --------------- INSTRUMENT FOCUS LOG ----------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ----------------------------------------------------------------------
 20:25  SPIcam       -50(1080)  7 53    8.8/10.8   18  11    R    0.87
 20:25  NA2gdr      475(60475)  7 53    8.8/10.8   18  11   none  1.17
 21:22  SPIcam       -50(1029) -1 54    8.4/9.7    89   7    R    0.89
 22:15  SPIcam        10(1090) -9 53    9.8/9.6    76   3    R    1.77
              ------------- WEATHER CONDITIONS ------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    55    38      3   299  (WNW)   1224    Cirrus    none
     17:01    55    38      2   266  (W)     1247    Cirrus    none
     18:01    50    38      0   226  (SW)    1273    Cirrus    none
     19:01    49    38      1   127  (SE)    1238  Lt. Cirrus  none
     20:01    47    37     11    82  (E)     1489  Lt. Cirrus  none
     21:01    48    35      8    81  (E)     1555   Mstly Clr  none
     22:01    50    20      2   105  (ESE)   1043  Lt. Cirrus  none
     23:01    48    32     10   123  (ESE)   1557  Lt. Cirrus  none
     00:01    45    39      9   105  (ESE)   2075  mstly clr   none
     01:01    45    39     12   123  (ESE)   2206   clear      none
     02:01    45    37      8   116  (ESE)   1897   clear      none
     03:01    44    38      9   136  (SE)    1873   clear      none
     04:01    45    40     11   173  (S)     1993   clear      none
     05:01    45    40     13   162  (SSE)   1842   clear      none
     06:01    46    41      8   179  (S)     1889   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
  Primary, secondary, and tertiary mirrors in place and collimated.
  Primary support system operational. Mirror ventilation system in place.
  Telescope drives operational. Current Remark version: 2.62. Current
  guide software version: GIm Ctrlv3.0b27. Current TCC version: 2.5.1
  Current MC version: v1_7_3.