From: Russet McMillan
Subject: 3.5m Night Log 20010329
Date: Fri, 30 Mar 2001 05:19:13 -0700 (MST)
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                       Thursday, March 29th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 --------------------------------------------------------------------
 J.Frith       J.Frith, M.Thomas       SPIcam          --:--  --:--
               K.Snyder
 N.Miller      M.Ledlow                DIS-Med         --:--  --:--
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW10/R      19:15 00:10   1.0  3.9   0    0    0    0    0    0    0
 NM06/R      00:10 05:00   4.8   0    0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
          1st Half Observing Specialist: Jack Dembicky
 Clouds prevented opening the enclosure on time.  It started
 a rain/ice/snow mix at 17:30.  Humidity was too high and snow
 started which prevented opening for the first half of the night. Snow
 started accumulating about 21:00.
          2nd Half Observing Specialist: Russet McMillan
 The snow stopped around midnight and the sky became less optically
 thick an hour or so later.  It was never quite clear, and the
 humidity was near the limit much of the night.  I checked the roof
 and found snow and ice present in places that made opening
 inadvisable, so the telescope remained closed all night.
         --------------- INSTRUMENT FOCUS LOG ----------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ----------------------------------------------------------------------
              ------------- WEATHER CONDITIONS ------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:02    44    23     11   276  (W)      741   Cloudy    none
     17:02    43    24      8   267  (W)      732   Cloudy  rain,ice,snow
     18:02    38    28     22   307  (NW)     698   Cloudy  rain,ice,snow
     19:02    37    28     13   326  (NW)     444   Cloudy  rain,ice,snow
     20:02    35    30     14   358  (N)      388   Cloudy  rain,ice,snow
     21:02    31    30     22    19  (NNE)    201   Cloudy    snow
     22:02    30    30     17     0  (N)       30   Cloudy    snow
     23:02    30    29      8   351  (N)      233   Cloudy    snow
     00:02    33    28      7   353  (N)      297   cloudy    none
     01:02    33    28     17   358  (N)      284  ptly cldy  none
     02:02    33    26     11   358  (N)      283  ptly cldy  none
     03:02    32    26      7   322  (NW)     328  ptly cldy  none
     04:02    32    25      5   329  (NNW)    264  ptly cldy  none
     05:02    32    26     10   338  (NNW)    287  ptly cldy  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.