From: Russet McMillan
Subject: 3.5m Night Log 20061220
Date: Thu, 21 Dec 2006 05:19:23 -0700 (MST)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                      Wednesday, December 20, 2006
                                                          ACTUAL
 ASTRONOMER      OBSERVER(S)             INSTRUMENT   START  FINISH
 -------------------------------------------------------------------
 J.Bally         J.Bally                 DIS          --:--  --:--
 A.Mukadam       A.Mukadam               DIS          --:--  --:--
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 CU01.R/R    17:59  00:00  6.0    0    0    0   0    0    0    0    0
 UW05/R      00:00  06:04  6.1    0    0    0   0    0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
1st half Observing Specialist: G.Saurage
Cloudy skies and high humidity at sunset. Wind gusts of 24 mph blowing
snow at 22:00 set off the rain sensor. Could not open all 1st half.
DIS slitviewer was sticky for the first 3-4 images then seemed to work
fine which is an improvement over the last time temperatures were down as
low as they were tonight. The insulating box seems to be helping. Also
increasing the exp time to 10 sec helps.
Took additional DIS saturation images (files are in tonight's APO UT
directory) and worked on DIS documentation.
2nd half Observing Specialist: R.McMillan
Second half continued humid except for a brief period of overcast.  I
worked on documentation, cleanup of old files, and alignment of DIS
gratings (which was unsuccessful due to incompatible hardware).
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------------
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:01    22    18     14   265    (W)    448   cloudy     none
     17:01    20    17     13   241  (WSW)    517   cloudy     none
     18:01    18    15     12   264    (W)    551 mstly cldy   none
     19:01    18    15     11   279    (W)    436  ptly cldy   none
     20:01    19    16     14   278    (W)    382    clear     none
     21:01    19    16     17   279    (W)    397    clear     none
     22:01    19    16     14   288  (WNW)    335    clear     none
     23:01    19    16     18   300  (WNW)    327  ptly cldy   none
     00:01    19    16     16   304   (NW)    348  ptly cldy   none
     01:01    18    14     15   307   (NW)    408 mstly cldy   none
     02:01    18    15     12   357    (N)    322 mstly clr    none
     03:01    17    14     13   348  (NNW)    308    clear     none
     04:01    17    14     16    16  (NNE)    292    clear     none
     05:01    16    13     14    11    (N)    287    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
      Telescope drives operational. Current TCC version: 2.8.5
      Current TUI version: TUI 1.2