Date: Sun, 30 Sep 2012 12:06:36 -0000 (UTC)
Subject: 3.5m Night Log 20120929
From: mcmillan@apo.nmsu.edu
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, September 29, 2012
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
D.York            D.York                Echelle        20:50   00:58
C.Hill            M.Hilton              NICFPS         01:05   04:30
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UC06/R     18:58   01:10    0   2.9   0    0   0.0  3.3   0    0
PU02/R     01:10   06:49    0   2.3   0    0   0.0  3.3   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
Clouds and nearby rain kept us closed for a while after sunset.  When we
did open, it was mostly clear, but there was one more wave of clouds
passing through first half which added an exrta hour of unusable time.
Second half looked lovely, until we realized that none of the three
dewpoint sensors were reporting accurate numbers and the real humidity was
quite high.  By checking surfaces in the dome, I was able to stay open
longer than the 2.5m, but eventually it was too much and I decided it was
time to close.
During first half there were pointing difficulties on several stars.  At
least two of these were stars with high proper motion and when I checked a
pointing standard it came up perfectly under the slit.  But one case did
seem to be a mystery, with the nearby pointing standard also significantly
off; we slewed away (magnesensor crossings showed small corrections) and
then back, and the star was there the second time.
                    ------- 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
--------------------------------------------------------------------------
 21:09 ECHELLE   441( -717) 214  40   9.0 11.0 10.5 11.1  9.4   ND4  1.15
 01:23 NICFPS   285(  515)  49  47   8.4  8.1  8.5  8.1  7.8   Ks  0.57
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    49    24      5   246  (WSW)    233   cloudy   lt rain
     17:00    52    25      2   237  (WSW)    229   cloudy     none
     18:00    52    26      3   232   (SW)    200 mstly cldy   none
     19:00    49    22      1   221   (SW)    181 mstly cldy   none
     20:00    47    32     13    48   (NE)    129  ptly cldy   none
     21:00    49    30      5    11    (N)    162 mstly clr    none
     22:00    49    32      2   266    (W)    175 mstly clr    none
     23:00    49    20      1   324   (NW)    155  ptly cldy   none
     00:00    47    32      2   221   (SW)    283    clear     none
     01:00    47    31      3   277    (W)    242    clear     none
     02:00    46    31      5   335  (NNW)    235    clear     none
     03:00    46    32      4   336  (NNW)    346    clear    humid
     04:00    46    32      8   347  (NNW)    356    clear    humid
     05:00    47    32      7     4    (N)    337    clear    humid
     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: 2.15.0
    Current TUI version: 1.9.5