From:
Subject: 3.5m Night Log 20110820
Date: Sun, 21 Aug 2011 12:21:19 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, August 20, 2011
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
G.Stringfellow    G.Stringfellow        Triplespec     20:40   01:20
T.Snow            D.Anderson            ECHELLE        01:25   02:10
                                                       03:50   05:15
W.Ketzeback       R.McMillan            TSPEC          05:15   06:00
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
CU03/R     19:51   01:10   0.8   0   1.3   0   1.3  1.9   0    0
CU09/R     01:10   05:22    0   1.7   0    0   0.0  2.5   0    0
DD02/R     05:22   06:22    0    0    0    0   0.0  1.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: R.McMillan
With some uncertain weather around, I opened at the end of evening
twilight and discovered that the azimuth was not moving properly.  It
took a while to identify and replace a blown fuse in one of the azimuth
amplifiers.  For the remainder of first half, partial clouds caused some
trouble.  During second half I closed a while to let some thicker clouds
and sprinkles pass by.  All the instruments worked well, and so did the
telescope after the fuse replacement.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
CU03    T         T/H      20:40  22:00   az amp blown fuse
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 22:22 TSPEC   200(  666) -18  32  17.4 18.1 17.8 17.7 17.1   Ks  1.10
 01:32 ECHELLE   350( -550) -10  55  16.7 16.5 16.8 16.4 16.5   ND3  0.85
 03:59 ECHELLE   192( -758) -54  37  13.8 15.0 15.6 15.0 13.8   ND3  1.30
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    72    52      9   225   (SW)    857 mstly cldy lt rain
     17:00    73    52     12   231   (SW)    779 mstly cldy   none
     18:00    71    51      8   223   (SW)    796 mstly cldy   none
     19:00    69    51      8   195  (SSW)    892  ptly cldy   none
     20:00    64    50      3   191    (S)    747  ptly cldy   none
     21:00    61    49      6   194  (SSW)    943 mstly clr    none
     22:00    63    49      4   195  (SSW)    647  ptly cldy   none
     23:00    62    49      1   208  (SSW)    614  ptly cldy   none
     00:00    61    49      5   185    (S)    671  ptly cldy   none
     01:00    63    49      8   184    (S)    729 mstly clr    none
     02:00    61    49      7   161  (SSE)   1050  ptly cldy   none
     03:00    58    50     12    89    (E)    989  ptly cldy lt rain
     04:00    57    50     13   122  (ESE)   1247  ptly cldy   none
     05:00    58    50     16   121  (ESE)   1271    clear     none
     06:00    59    50     14   126   (SE)   1291    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: 2.14.0
    Current TUI version: 1.9.1