Date: Wed, 11 Apr 2001 05:21:20 -0600 (MDT)
From: Jack Dembicky
Subject: 3.5m Night Log 20010410
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                        Tuesday, April 10th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 --------------------------------------------------------------------
 C.Laws        G.Gonzalez              Echelle         --:--  --:--
 M.Strauss     X.Fan, V.Narayanan      SPIcam          --:--  --:--
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW05/R      20:25 01:00   2.0  2.6    0    0    0    0    0    0    0
 PU02/R      01:00 05:43    0   4.7    0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 1st and 2nd half Observing Specialist: Jack Dembicky
 Enclosure fans/louvers were not turned on/opened due to very high dust
 counts.  We also had winds in excess of 50+ MPH at the start of the
 night.  The dust subsided but the humidity and/or winds remained, keeping
 us closed for the entire night.
 We also had a problem (maybe?) with the NA2 guider not reading correctly.
 Craig was here to diagnose the problem and seemed to fix it (not sure).
 PR was submitted anyhow and I also did some further testing during the
 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
    ------------------------------------------------------------------
     16:01    39    21     25   261  (W)    15951   Clouds     Dust
     17:01    38    16     35   263  (W)    28772   Clouds     Dust
     18:01    34    10     39   258  (WSW)  19900   Clouds     Dust
     19:01    25    17     20   278  (W)    25266   Clouds     Dust
     20:01    21    14     30   284  (WNW)   9373   Clear      Dust
     21:01    20     9     31   272  (W)     7382   Clear      Dust
     22:01    18    12     35   273  (W)     2443   Clear?     none
     23:01    18    15     32   285  (WNW)    341   Clear?     none
     00:01    17    15     30   261  (W)      776   Cloudy    Lt. snow
     01:01    17    16     21   269  (W)      314   Cloudy    Lt. snow
     02:01    16    15     14   266  (W)     1857   Cloudy    Lt. snow
     03:01    16    15     15   266  (W)     1862   Cloudy    Lt. snow?
     04:01    15    14     15   288  (WNW)   1973  Pt. Cldy     none
     05:01    15    14     12   276  (W)     1858  Pt. 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.