From: Russet McMillan
Subject: 3.5m Night Log 20031123
Date: Sun, 23 Nov 2003 06:29:50 -0700 (MST)
                         Apache Point Observatory
                         3.5m Telescope Night Log
                        Saturday, November 22, 2003
                                                          ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 E.Ellingson    E.Ellingson,A.Hicks     DIS            03:10  06:00
                S.Fawcett
  INST        SCHEDULED      WEATH     EQUIP     OBS     DAY  NOT USED
 I/RO/DN     START FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 CU01/R      17:56  05:44  9.2   0    0    0   2.6   0   0    0    0
 note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 1st Half Observing Specialist: J.Barentine
 High wind (50 MPH gusts) and correspondingly high dust counts (37000 1
micron particles per 0.1 cubic foot by the handheld dust sensor) near
sundown.  Dust and winds remained high throughout first half.  Orographic
clouds came and went throughout the half as well.
 2nd Half Observing Specialist: R.McMillan
 The dust levels dropped around midnight, and wind mostly stayed
 below the limit, but some heavy orographic clouds developed at the
 same time and made it useless to open.  After 02:30 the clouds broke
 up, but they continued to come and go until about 04:00.  We focused
 and got some observations through the clouds and later while it was
 clear, but the seeing was very poor -- 2.5 at best, >4 at worst.
 We had a number of possibly cold-related problems, including
 magnesensor errors that took longer to clear up than usual and
 several large (>15 arcsec) image jumps associated with focus
 adjustments.  But these didn't cost too much time.
                     ------- FAILURE LOG -------
 PROG   INST   FAILURE MODE     TIME
      (SEGDFVO)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 03:22 DISslit     -350(188)   -8  76  -5.8/-3.2  287  16   -     2.5
                 -------------- WEATHER LOG ----------------
                                 Wind                        Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
     ------------------------------------------------------------------
     16:01    42    12     22   258  (WSW)      0  MstlyClr    dust
     17:01    40    12     34   262  (W)        0  MstlyClr    dust
     18:01    38    14     34   256  (WSW)      0  MstlyClr    dust
     19:01    34    18     19   262  (W)        0  MstlyClr    dust
     20:01    32    17     18   275  (W)        0  PtlyCldy    dust
     21:01    31    15     20   311  (NW)       0  PtlyCldy    dust
     22:01    30    13     31   284  (WNW)      0  MstlyCldy   dust
     23:01    29    11     17   286  (WNW)      0  PtlyCldy    dust
     00:01    27     7     22   286  (WNW)      0  PtlyCldy    dust
     01:01    26     6     19   282  (WNW)      0  mstly cldy  none
     02:01    25     6     17   270  (W)        0  mstly cldy  none
     03:01    22     5     12   272  (W)        0  mstly cldy  none
     04:01    20     4     26   286  (WNW)      0   mstly clr  none
     05:01    20     0     17   337  (NNW)      0    clear     none
     06:01    17    -1     14    12  (NNE)      0    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 Remark version: 2.85b
   Current guide software version: guider v4.1b4
   Current TCC version: 2.7.2  Current TUI version: TUI-0.75