From: Russet McMillan
Subject: 3.5m Night Log 20011018
Date: Fri, 19 Oct 2001 06:51:27 -0600 (MDT)
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                       Thursday, October 18th, 2001
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 K.Sembach     D.Bowen,T.Tripp         DIS-low         19:05   01:03
 B.Pindor      B.Pindor                DIS-low         01:03   06:13
   INST        SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 JH01/R      19:20  01:00   0    0    0    0   4.9  0.8   0    0    0
 PU01/R      01:00  06:18   0    0    0    0   5.3  0.0   0    0    0
   note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J. Barentine
 The first-half observers showed up around 18:00 and began taking cals
at 18:15, once checkout was complete.  The enclosure was opened at 18:45
under skies obscured by moderately-thick cirrus.  Those clouds gradually
disappeared as the sky grew darker.
 Around 20:50 the remote observers noted that the slitviewer images were
"starting to fade" and suspected clouds, but the sky was clear in their
observation area.  The software was also failing to centroid on stars
properly.  After restarting it at my suggestion, it appeared to behave
properly again.
 2nd Half Observing Specialist: R. McMillan
 Second half had cirrus and moderate to poor seeing (1.3 to 2 arcsec),
 but was otherwise amazingly peaceful.
               ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt   FWHM
 ----------------------------------------------------------------------
 19:09  DIS-slit -120(825)    141  39  11.5/12.5   318 10    --    1.11
 19:14  NA2Gdr    832(56699)  142  40  11.6/13.6   308 10    R     1.11
 20:46  DIS-slit  -50(792)    173  44  11.8/12.2   295  7    --    1.10
 01:09  DISslit    -50(822)   232  37   9.4/10.3   31   12   -     1.59
 01:11  NA2gdr   1918(58918)  232  36   9.6/10.2   29   9    R     1.42
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    60    18      6   261  (W)      957  MstlyCldy   none
     17:01    58    16      6   276  (W)      821  MstlyCldy   none
     18:01    54    15     13   312  (NW)     976  PtlyCldy    none
     19:01    53    14     12   298  (WNW)    904  PtlyCldy    none
     20:01    52    13      9   277  (W)      969  PtlyCldy    none
     21:01    53    14      9   282  (WNW)    980  MstlyClr    none
     22:01    53    15      9   293  (WNW)   1107  MstlyClr    none
     23:01    52    17     10   279  (W)     1196  MstlyClr    none
     00:01    51    17     10   338  (NNW)   1067  MstlyClr    none
     01:01    49    13      7     6  (N)     1123  ptly cldy   none
     02:01    51    12     16    30  (NNE)    844  ptly cldy   none
     03:01    50    12     16    19  (NNE)    698  mstly clr   none
     04:01    50    12     19    15  (NNE)    750  mstly clr   none
     05:01    50    11     15    15  (NNE)    567    clear     none
     06:01    49    11     19   353  (N)      506    clear     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.