From: Russet McMillan
Subject: 3.5m Night Log 20010228
Date: Thu,  1 Mar 2001 06:27:55 -0700 (MST)
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                     Wednesday, February 28th, 2001
                                                          ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 --------------------------------------------------------------------
 S.Hawley     S.Hawley,N.Silvestri     DIS-High        01:25  05:50
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
  I/RO/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UW03/R      18:53  05:38  2.1  4.3   0    0   4.4   0     0    0    0
  note: scheduled times listed include instrument change time
                 ------------- ACTIVITY LOG --------------
 Observing Specialist, 1st Shift: Jack Dembicky
The skies cleared at sunset but high humidity prevented opening the
enclosure for the first half of the night.
 Observing Specialist, 2nd Shift: Russet McMillan
The humidity dropped very gradually after midnight, finally going low
enough long enough to open after 0100.  Although the fans were turned
on about half an hour before opening, the telescope was still very
warm at first, and the seeing was quite bad.  Over a few hours, the
images dropped from >2 arcsec to about 1.2 arcsec, with occasional
stretches of subarcsecond seeing.  Aside from a few clouds and
continuing concerns about the dewpoint being too close to the
telescope temperature, everything went smoothly and many targets were
observed.
         --------------- INSTRUMENT FOCUS LOG ----------------
                                       Air/Truss   Wind
 Time   Instrument   Focus     Az El    Temp-C    Dir MPH  filt   FWHM"
 ---------------------------------------------------------------------
01:43 DISslit     -350(201)   148 32  -4.1/-3.1  302  13   -     2.2
01:57 NA2gdr     -1000(56050) 151 33  -4.3/-3.3  286  9    Red   1.58
02:41 DISslit     -200(218)   52  60  -4.1/-3.7  300  15   -     1.4
03:12 DISslit     -100(299)   55  68  -4.1/-3.9  309  16   -     1.1
03:12 NA2gdr      1000(57000) 55  68  -4.1/-4.0  313  15   none  1.03
              ------------- WEATHER CONDITIONS ------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    28    27     24   265  (W)      201   Cloudy     none
     17:01    28    26     20   245  (WSW)    180  pt. cldy    none
     18:01    26    24     12   266  (W)      185   clear      none
     19:01    25    23     12   293  (WNW)    179   clear      none
     20:01    25    22     11   273  (W)      187   clear      none
     21:01    25    21     14   299  (WNW)    285   clear      none
     22:01    25    21      9   293  (WNW)    356   clear      none
     23:01    25    21     12   281  (W)      319   clear      none
     00:01    25    21     12   284  (WNW)    273  mstly clr   none
     01:01    25    20     15   294  (WNW)    260  mstly clr   none
     02:01    25    18     11   318  (NW)     237  mstly clr   none
     03:01    25    17     13   311  (NW)     280  mstly clr   none
     04:01    24    18     13   304  (NW)     298   cirrus     none
     05:01    24    18     12   300  (WNW)    318  mstly clr   none
     06:01    24    18      7   281  (W)      361  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: 2.5.0b2
  Current MC version: v1_7_3.