From: Russet McMillan
Subject: 3.5m Night Log 20070910
Date: Tue, 11 Sep 2007 05:54:27 -0600 (MDT)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                       Monday, September 10, 2007
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)              INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 M.Klaene       R.McMillan               DIS           --:--  --:--
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 EN02/W     20:10  05:50   9.6   0    0    0    0    0    0    0    0
  note: scheduled times listed include instrument change time
               ------------- ACTIVITY LOG --------------
 Observing Specialists: R.McMillan
 The telescope was very nearly ready to go on the sky tonight (four
 nights early!), but unfortunately the sky wasn't ready for us.  Rain
 and lightning and high humidity and high winds meant no chance of
 opening.
 I did some preparatory work for measuring collimation once we can
 get on sky, and checked out instruments.  I resolved some minor
 problems with SPIcam and the echelle slitviewer and found a problem
 with the DIS red side which I couldn't resolve: the images are all
 in reverse video, with a bias level around 65K and light sources
 gving lower values.  The histogram is much too smoothly populated
 for this to be random bit-flipping, so I'm guessing it's some
 software switch that just needs to be reset.  I was able to work
 with DIS despite this problem, and got all eight gratings aligned
 (but the R1200 might need a little more refinement).
                      ------- 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
   -------------------------------------------------------------------
     16:00    56    52      9    81    (E)    647   cloudy     rain
     17:00    50    48     24    72  (ENE)    327   cloudy     rain
     18:00    49    46     28    79    (E)    353   cloudy     rain
     19:00    51    44     17    87    (E)     47   cloudy   lt rain
     20:00    53    42     10    83    (E)     68   cloudy     none
     21:00    53    42     11    80    (E)    245   cloudy     none
     22:00    55    43     15   112  (ESE)    237   cloudy    humid
     23:00    52    50     24    72  (ENE)     38   cloudy   lt rain
     00:00    48    47     30    71  (ENE)     14   cloudy    humid
     01:00    47    46     32    65  (ENE)      1   cloudy    humid
     02:00    46    44     32    72  (ENE)     68   cloudy   lt rain
     03:00    49    42     30    72  (ENE)    382   cloudy     none
     04:00    49    42     23    70  (ENE)   3034   cloudy     none
     05:00    49    42      5    83    (E)   1292   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
     Telescope drives operational. Current TCC version: 2.9.1
     Current TUI version: TUI 1.4