From: Russet McMillan
Subject: 3.5m Night Log 20060420
Date: Fri, 21 Apr 2006 06:21:59 -0600 (MDT)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Thursday, April 20, 2006
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START FINISH
 --------------------------------------------------------------------
 V.Debattista    V.Debattista           DIS            20:00   00:10
 M.Klaene        R.McMillan             NA2Gdr         00:12   01:45
 I.Ivans         I.Ivans                Echelle        01:45   05:50
  INST     SCHED(TWILIGHT)   WEATH     EQUIP     OBS     DAY  NOT USED
 I/ROW/DN    START FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 UW05/R      20:33  00:00   0    0    0    0   3.4   0    0    0    0
 EN01/W/D    00:00  02:00   0    0    0    0   2.0   0    0    0    0
 PU01/R      02:00  05:32   0    0    0    0   0.6  2.9   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Clear skies and good seeing.  Dust levels were elevated all night,
 above the closure limit outside the dome.  But judicious
 manipulation of fans, louvers, and doors kept the levels inside the
 dome manageable.
 The first-half observations were quite challenging and led to the
 discovery of some minor bugs in the new guide software, which is
 still being worked on.
 During the middle of the night I made an authorized pre-empt of
 science in order to obtain data for a pointing model.  The results
 seem to show nothing grossly wrong with the telescope, but there are
 some mysterious subtleties that might or might not indicate
 something going on.
 Second half everything went smoothly, except for a target we
 couldn't find despite multiple coordinate checks, finding chart
 printouts, and three pointing reference stars in a triangle around
 the field.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)    TI/SHU   START  FINISH  DESCRIPTION
 -----------------------------------------------------------------------
                ---------------- FOCUS LOG ---------------
                                        Air/Truss   Wind
 Time   Instrument   Focus     Az  El    Temp-C    Dir MPH  filt  FWHM
 ---------------------------------------------------------------------
 01:49 Echelle     10(28)      -15775  8.6/8.0    216  11   ND1   1.01
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:01    53     8     18   270  (W)     2928    clear     none
     17:01    52     7     16   277  (W)     3311    clear     none
     18:01    52     7     28   306  (NW)    3451    clear     none
     19:01    52     7     16   297  (WNW)   2935    clear     none
     20:01    50     5      5   359  (N)     2894    clear     none
     21:01    49     6      5   351  (N)     2923    clear     none
     22:01    48     5      6   263  (W)     2972    clear     none
     23:01    48     6     11   245  (WSW)   2833    clear     none
     00:01    46     5     11   200  (SSW)   2915    clear     none
     01:01    47     7      9   206  (SSW)   3622    clear     none
     02:01    48     5      9   225  (SW)    3552    clear     none
     03:01    47     6      9   262  (W)     3814    clear     none
     04:01    45     8      4   261  (W)     3691    clear     none
     05:01    44     5      4   334  (NNW)   3459    clear     none
     06:01    47     4     12    43  (NE)    2907    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: 2.8.3
      Current TUI version: TUI 1.1