From: Russet McMillan
Subject: 3.5m Night Log 20011025
Date: Fri, 26 Oct 2001 06:22:04 -0600 (MDT)
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                       Thursday, October 25th, 2001
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 M.Strauss     X.Fan,V.Narayanan       DIS-Low         18:15   06:18
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 PU02/R      19:13  06:22   0    0    0    0   4.3  6.8   0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: Jack Dembicky
I started cooling the enclosure (fans and louvers) at 17:00.  Louvers were
closed for DIS checkout at 17:40 but fans were left on.  Tonights
observers came online around 18:00 just as I was finishing the checkout
and procedeed to start their cals at around 18:12.
Everything ran smoothly and seeing started out around 1 arc until the wind
changed direction a around 21:00 and then the seeing deteroiated to
between 1.5-2.3 arc sec.
 2nd Half Observing Specialist: Russet McMillan
 Second half had continuous thin cirrus and improved seeing, getting
 down to 0.7 arcsec for a while.  There was one timeout failure of the
 guide camera, which didn't cost any science time.
               ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt   FWHM
 ----------------------------------------------------------------------
18:50  DISslit     -170(676)  109  62   9.8/13.8   184   9  none   1.03
18:58  NA2gdr     836(57836)  110  63   9.8/13.5   195   8    R    1.00
21:37  DISslit      -80(579)  123  62   8.4/9.2    179   8  none   1.49
21:42  NA2gdr     628(57628)  125  63   8.8/9.3    178   8  clear  1.35
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    60    20      8   278  (W)      474   Cirrus     none
     17:01    59    19      8   256  (WSW)    536   Cirrus     none
     18:01    52    18      2   223  (SW)     639   Cirrus     none
     19:01    49    19      6   185  (S)      670   Cirrus     none
     20:01    50    20      7   186  (S)      611   Cirrus     none
     21:01    48    20      9   175  (S)      580   Cirrus     none
     22:01    48    19      8   182  (S)      576   Cirrus     none
     23:01    48    19      2   118  (ESE)    634   Cirrus     none
     00:01    49    18      0   151  (SSE)    579   Cirrus     none
     01:01    48    18      5   176  (S)      556   Cirrus     none
     02:01    48    17      8   179  (S)      569   Cirrus     none
     03:01    49    19      5   182  (S)      534   Cirrus     none
     04:01    49    19      1   179  (S)      633   Cirrus     none
     05:01    49    19      1   182  (S)      559   Cirrus     none
     06:01    49    20      4   183  (S)      550   Cirrus     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 Ctrlv4.1b2. Current TCC version: 2.5.5
   Current MC version: v1_7_3.