Date: Sun, 25 Apr 2010 13:15:33 -0000 (UTC)
Subject: 3.5m Night Log 20100424
From: jwhueh@apo.nmsu.edu
                       Apache Point Observatory
                       3.5m Telescope Night Log
                       Saturday, April 24, 2010
                                                       ACTUAL
ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
W. Ketzeback    J. Huehnerhoff          ECHELLE/TSPEC  19:44    20:45
T. Yan          T. Yan, J. Stocke       TSPEC          20:45    23:55
                                                       00:46    01:10
S. Schmidt      S. Schmidt              TSPEC          01:10    05:08
G. Stringfellow G. Stringfellow,        ECHELLE        05:11    06:14
                D. Morris
  INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
--------------------------------------------------------------------
NM08/R    19:48   20:48    0    0    0    0    0   1.0   0    0
CU05/R    20:48   01:10    0   0.9   0    0    0   3.5   0    0
UW06/R    01:10   05:14    0    0    0    0   0.9  3.1   0    0
CU09/R    05:14   06:14    0    0    0    0   1.0   0    0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist:    J. Huehnerhoff
No ice on enclosure during checkout.
Threatening clouds during evening stayed to the east; the remaining clouds
where light through 2100MT when the dust level started to rise.  Dust
levels dropped after 30 minutes and the rest of the night was photometric
with good seeing.
At 20:05MT the telescope started making the 100Hz noise.  The telescope
was at and az/alt of 240/80 slewing from the west to north.  I slewed it
to and az of 90 at which point it stopped and reslewed from the north to
west without a problem.
12:46 01:10
                    ------- 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
--------------------------------------------------------------------------
 19:49 ECHELLE   325( -412) 238  44   5.7  6.8  5.7  6.7  6.4   ND3  1.19
 20:14 TSPEC   346(  590) 237  38   5.9  6.3  5.9  5.8  6.0   clear  1.91
 20:53 TSPEC   346(  534) 152  75   5.9  5.9  5.9  5.4  5.7   clear  0.91
 22:32 TSPEC   200(  377) 185  65   6.1  5.6  6.0  5.1  5.7   clear  1.03
 01:22 TSPEC   250(  417)  46  36   4.7  4.7  5.2  4.0  4.4   clear  1.03
 05:18 ECHELLE   -75( -996)  -2  41   3.5  3.0  3.3  2.5  3.0   ND1  0.87
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    46    29      3   344  (NNW)    436 mstly clr    none
     17:00    44    26     20   278    (W)    474 mstly clr    none
     18:00    45    24     13   285  (WNW)    544 mstly clr    none
     19:00    44    24     12   322   (NW)    684 mstly clr    none
     20:00    43    23     11   304   (NW)    655    clear     none
     21:00    43    21      8   297  (WNW)    668 mstly clr    none
     22:00    43    20      8   339  (NNW)    679 mstly clr    none
     23:00    43    18      8   356    (N)    893 mstly clr    none
     00:00    42    17      8   335  (NNW)   7279    clear     dust
     01:00    40    12     12    22  (NNE)   5620    clear     none
     02:00    40    12     10   357    (N)   2873    clear     none
     03:00    39    14     14   349    (N)   2351    clear     none
     04:00    38    15      9   352    (N)   1851    clear     none
     05:00    39    12     16    18  (NNE)   1303    clear     none
     06:00    38    12      6    14  (NNE)   1321    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: 2.11.1
    Current TUI version: 1.7.2