Date: Wed, 10 Jan 2001 05:08:12 -0700 (MST)
From: Jack Dembicky
Subject: 3.5m Night Log 20010109
                        APACHE POINT OBSERVATORY
                        3.5m Telescope Night Log
                      Tuesday,  January 9th, 2001
                                                           ACTUAL
 ASTRONOMER    OBSERVER(S)            INSTRUMENT       START  FINISH
 --------------------------------------------------------------------
 B.Gillespie   J.Dembicky                              --:--  --:--
  INST        SCHEDULED     WEATH     EQUIP      OBS    DAY   NOTUSED
 I/RO/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 --------------------------------------------------------------------
 WS01/O     18:12  06:09   0  11.9   0    0    0    0    0    0    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist, 1st & 2nd Shift: Jack Dembicky
 The day staff started the replacement of one of the enclosure drive
 motors.  Upon dis-assembly/inspection they found excessive wear in the
 motor housing from the steel assembly wearing agaainst the cast aluminum
 housing.  This wear caused aluminum shavings to build up in the housing
 and eventually get into the brake assembly, which is the cause of the
 squeel that Russet heard a couple nights ago.  Because the motor assy. is
 still dis-assembled, and in repair, the telescope remained closed for the
 entire night with Mark locking out the power out to the drive motors.
 Not much was lost since the humidity was too high to open and clouds would
 have prevented any observations. Expected rebuild/re-assembly of the
 drive is 14:00 tommorow.
 Russet called in at 22:00 to check on the weather conditions. Since there
 was no science being done tonight with the telescope motor broken, and
 no real need for her to drive all the way here under icy road conditions
 from the snow earlier in the afternoon.  I stayed and filled the cameras
 for her at 04:30.
        --------------- INSTRUMENT FOCUS LOG ----------------
                                       Air/Truss   Wind
 Time  Instrument   Focus     Az  El    Temp-C   Dir MPH  filt   FWHM"
 ---------------------------------------------------------------------
             ------------- WEATHER CONDITIONS ------------
                               Wind                          Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    34    27     22   129  (SE)     325   pt. cldy  none
     17:01    32    27     18   133  (SE)     372   pt. cldy  none
     18:01    31    27     22   138  (SE)     508    cloudy   none
     19:01    32    27     26   135  (SE)     528    cloudy   none
     20:01    30    25     21   126  (SE)     482    cloudy   none
     21:01    28    24     14   128  (SE)     690    cloudy  lt. snow
     22:01    24    21      5    82  (E)      640    cloudy   none
     23:01    22    19     15   108  (ESE)    558    cloudy   none
     00:01    26    23     12   141  (SE)     822    cloudy   none
     01:01    26    23     12   143  (SE)     859    cloudy   none
     02:01    26    22     13   128  (SE)     790    cloudy   none
     03:01    26    22      2   177  (S)      752    cloudy   none
     04:01    25    20      1   194  (SSW)    646    cloudy   none
     05:01    23    22      5   356  (N)      431    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 Ctrlv3.0b27. Current TCC version is 2.4.1
 Current MC version: v1_7_3.
 - Jack Dembicky