Date: Sun, 11 Apr 2010 12:06:24 -0000 (UTC)
Subject: 3.5m Night Log 20100410
From: jwhueh@apo.nmsu.edu
                       Apache Point Observatory
                       3.5m Telescope Night Log
                       Saturday, April 10, 2010
                                                       ACTUAL
ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
E. Hilton       E. Hilton              Agile         19:34    01:04
R. Reyes        R. Reyes               DIS           01:06    05:50
  INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
--------------------------------------------------------------------
UW02/R    19:38   01:10    0    0   0.4   0   5.1   0    0    0
PU03/R    01:10   06:30    0    0    0    0   3.6  1.7   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist:    J. Huehnerhoff
A night of trouble for agile.  First the good; the new rotator cotter pin
worked great, as did the agile on chip guiding guiding.  However, just
after sky flats at 20:00MT the agile ICC died.  Wiki instructions allowed
for a quick recovery.  The big problem occurred at 20:43MT, the rotator
errored with "motion error to large".  After checking it out, making sure
it wasn't binding, trying to move again (with the same error), Fritz was
able to help identify the problem.  The amplifier for the rotator had
gotten into a weird state and needed to be power cycled.
Seeing during most of the first have was sub arcsecond.  Increasing clouds
during second half with more variable seeing (although mostly arcsecond or
less).
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
UW02     P         T/H     20:43  21:10    Agile rotator amplifier error
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 20:15 AGILE   105(-1809)  61  47   8.4 10.5  9.4  9.1  9.4   MSSSO B  1.10
 01:11 dis-slit   120(  130)  74  70   7.0  8.3  8.6  8.0  8.2   clear  1.15
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    54    12     23   262    (W)   1217    clear     none
     17:00    54    14     18   258  (WSW)   1000    clear     none
     18:00    53    16     18   266    (W)   1077    clear     none
     19:00    51    14     17   253  (WSW)   1024    clear     none
     20:00    47    14     11   262    (W)    956    clear     none
     21:00    46    13     10   263    (W)    950    clear     none
     22:00    48    12      4   253  (WSW)   1108    clear     none
     23:00    47     8      7   265    (W)   1166    clear     none
     00:00    47     8      5   266    (W)   1131    clear     none
     01:00    48     9      8   246  (WSW)    996 mstly clr    none
     02:00    47     9     10   282  (WNW)   1219 mstly cldy   none
     03:00    47     6      8   337  (NNW)   1186    clear     none
     04:00    47     6      8   326   (NW)   1100  ptly cldy   none
     05:00    47     6     12   315   (NW)   1108  ptly cldy   none
     06:00    47     5      5   301  (WNW)   1201 mstly cldy   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: 1.7.1