From: Russet McMillan
Subject: 3.5m Night Log 20020117
Date: Fri, 18 Jan 2002 05:31:47 -0700 (MST)
                         APACHE POINT OBSERVATORY
                         3.5m Telescope Night Log
                       Thursday, January 17th, 2002
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)             INSTRUMENT      START  FINISH
 -------------------------------------------------------------------
 G.Wolf-Chase  R.Evans                 GrIm-f/5        16:55  18:18
                                                       22:05  00:00
 M.Strauss     M.Strauss,Y.Loh,        DIS-low         --:--  --:--
               I.Strateva
   INST       SCHEDULED     WEATH     EQUIP     OBS     DAY  NOTUSED
 I/RO/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 UC04/R     18:19  00:10  1.0  3.0   0    0   1.9   0    0    0    0
 PU04/R     00:10  06:08  6.0   0    0    0    0    0    0    0    0
 note: scheduled times listed include instrument change time
                  ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Dembicky
 I started the cooling fans around 16:00 tonight and opened the enclosure
 at 16:50 under mostly clear skies. The first half observer started taking
 their darks shortly after I opened.  We focused around 17:50 and then
 the clouds rolled in around 18:15 and stopped us from starting on
 schedule.
 We had a slight clearing spell (not much actually) around 22:00 in which
 I was able to focus the telescope and turn the telescope back over
 to the first half observer.
 2nd Half Observing Specialist: Russet McMillan
 After some improvement in the weather towards the end of first half,
 the clouds returned right around the switchover time.  We were able
 to get DIS focused, but the clouds kept getting thicker and the
 telescope was closed soon afterward.  No science was accomplished
 during second half.
                   ------- FAILURE LOG -------
 PROG/INST  FAILURE MODE     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
 ----------------------------------------------------------------------
 17:50  GrIm-f/5     -70(264) 109  58    0.3/1.9   219  20    k'   0.90
 22:02  GrIm-f/5      90(461) 151  44    1.4/0.8   261  19    k'   0.95
 00:25  DISslit     -25(367)  170  58    1.4/1.1   223  21   -     0.90
              --------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    38    21     16   263  (W)      328  Mst. Clr    none
     17:01    35    22     17   225  (SW)     364  Mst. Clr    none
     18:01    33    24     17   232  (SW)     386   Cloudy     none
     19:01    33    24     14   250  (WSW)    403   Cloudy     none
     20:01    34    24     14   235  (SW)     302   Cloudy     none
     21:01    34    26     16   252  (WSW)    330   Cloudy     none
     22:01    35    26     10   259  (W)      349   Cloudy     none
     23:01    35    25     14   257  (WSW)    304   ptly cldy  none
     00:01    34    25     19   241  (WSW)    244   ptly cldy  none
     01:01    34    26     14   217  (SW)     298  mstly cldy  none
     02:01    34    26     16   247  (WSW)    285    cloudy    none
     03:01    33    26     16   248  (WSW)    322    cloudy    none
     04:01    33    27     22   251  (WSW)    219    cloudy    none
     05:01    32    27     15   264  (W)      205    cloudy    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.