Date: Sat, 22 Jun 2002 03:40:26 -0600 (MDT)
From: John Barentine
Subject: 3.5m Night Log 20020621
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                           Friday, June 21, 2002
                                                           ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT     START  FINISH
 -------------------------------------------------------------------
 G.Wallerstein  G.Wallerstein           Echelle        20:50   03:00
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW08/R      21:18  04:52  0.9  1.1   0    0    0   5.6   0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Barentine
 Opened the enclosure at 19:40 to begin cooling a short while before
sunset.  Rain earlier in thew day helped cool the air and add water vapor,
leading to humidity levels that steadily crept upward during twilight.
Winds that picked up around sunset stayed with us throughout the first
half, with increasing clouds from the west.  These conditions continued
through the second half, although George was able to get some useful data
through the cirrus.
 At about 03:00, with thickening clouds and a dwindling list of observable
objects, George decided to give up for the night.
                        ------- FAILURE LOG -------
 PROG   INST       FAILURE      TIME
        S/E/G/D/O  TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 21:01  Echelle      100      143  53   15.2/16.4  95  16   clear 1.48
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    70    44     12   196  (SSW)   1846  MstlyClr    none
     17:01    68    44      6   196  (SSW)   1877  MstlyClr    none
     18:01    70    44      5   261  (W)     2009  PtlyCldy    none
     19:01    65    45     12   143  (SE)    2243  PtlyCldy    none
     20:01    61    45      9    93  (E)     1663  PtlyCldy    none
     21:01    59    44     17    83  (E)     1807  PtlyCldy    none
     22:01    58    43     18   109  (ESE)   2125  PtlyCldy    none
     23:01    57    43     18   111  (ESE)   1978  MstlyCldy   none
     00:01    57    44     21   119  (ESE)   2669  MstlyCldy   none
     01:01    57    44     16   131  (SE)    2973  MstlyCldy   none
     02:01    56    44     11   163  (SSE)   2940  MstlyCldy   none
     03:01    59    44     13   197  (SSW)   1888  MstlyCldy   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: 2.82
   Current guide software version: GIm Ctrlv4.1b2
   Current TCC version: 2.6.3