Date: Sun, 15 Apr 2012 12:49:53 -0000 (UTC)
Subject: 3.5m Night Log 20120414
From: mcmillan@apo.nmsu.edu
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, April 14, 2012
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
J.Wisniewski      J.Wisniewski          Echelle        20:40   22:00
S.Bickerton       S.Bickerton           DIS            --:--   --:--
D.York            D.York                DIS            03:25   05:35
T.Murphy          R.McMillan            APOLLO         05:40   06:25
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
UW04/R     19:42   22:10   1.1   0    0    0   1.4  0.0   0    0
PU03/R     22:10   01:10   3.0   0    0    0   0.0  0.0   0    0
UC01/R     01:10   05:40   2.0  0.4   0    0   0.0  2.1   0    0
UW17/R     05:40   06:25    0    0    0    0   0.0  0.8   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
High dust at the start of the night; clouds and a few snowflakes and high
winds later on.  When we were able to open, the seeing was poor to awful,
not unexpected.  More surprisingly, everything worked just fine despite
the sudden sharp cold snap - I suppose that's the difference between a
cold snap in April compared to one in November!
                    ------- 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
--------------------------------------------------------------------------
 19:46 ECHELLE   646(-1026) 216  66  -3.1  1.1  3.0  0.5 -2.0   Clear  3.50
 21:23 dis-slit   600( -262) -101  61  -3.6 -3.2 -2.5 -3.5 -3.6   -  3.80
 04:41 APOLLO   550(  196)  49  57  -7.4 -7.2 -6.5 -7.2 -7.5   530  2.50
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    47    16     43   235   (SW) 138055  ptly cldy   dust
     17:00    43    15     26   281    (W) 112891  ptly cldy   dust
     18:00    37    20     16   276    (W)  59846 mstly clr    dust
     19:00    33    20     30   289  (WNW)  19867 mstly clr    dust
     20:00    28    19     20   305   (NW)   7121  ptly cldy   none
     21:00    26    18      3   296  (WNW)   1780  ptly cldy   none
     22:00    26    17     26   288  (WNW)   1170 mstly cldy   none
     23:00    25    15     18   295  (WNW)   1298   cloudy   lt snow
     00:00    25    13     22   299  (WNW)   1515   cloudy     none
     01:00    24    10     23   282  (WNW)   1299   cloudy     none
     02:00    25     9     31   270    (W)   1431 mstly cldy   none
     03:00    23     5     16   283  (WNW)   1311 mstly clr    none
     04:00    21     2     29   298  (WNW)    761    clear     none
     05:00    19     5     32   311   (NW)    757    clear     none
     06:00    18     8     13   321   (NW)   1521    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: 2.15.0
    Current TUI version: 1.9.5