Date: Sun, 19 May 2013 11:34:04 -0000 (UTC)
Subject: 3.5m Night Log 20130518
From: "Alysha Shugart"
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Saturday, May 18, 2013
                                                           ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT     START  FINISH
--------------------------------------------------------------------
M.Fumagalli       M.Fumagalli           DIS            22:54   01:15
A.McKay           A.McKay               Echelle        01:16   05:30
   INST       SCHEDULED     WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B    D    B
 ----------------------------------------------------------------
PU07/R     20:06   01:10    0   1.8   0   0.1  0.0  3.2   0    0
NM01/R     01:10   05:53    0    0    0    0   3.7  1.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Shugart
HIgh winds and dust kept us closed at first, and then I opened when gusts
finally went below 32 mph.
At 23:25, TUI beeped, indicating a "Motion error too large" in azimuth.
The telescope was pointed in the west, in the gusty winds, although they
were not above closure limits. The last recorded gust was 32.1 mph, with
an average speed of ~ 25 mph. I issued a tcc axis stop, and engaged the
brakes. After a few minutes, I issued a tcc axis init, and PU07 was able
to slew and resume guiding on her galaxy. It happened again at 23:53,
although the wind conditions were the same as the first occurrence, and
the galaxy remained in the guider. I repeated my steps from the first
error, and tried again. We had success again with this, and no problems
for the remainder of the program.
No problems the rest of the night.
                    ------- FAILURE LOG -------
PROG   INST   FAILURE MODE     TIME
    (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
----------------------------------------------------------------------
PU07   DIS       T/H      23:25  23:28   Motion control error in azimuth
            ---------------- FOCUS LOG ---------------
Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
--------------------------------------------------------------------------
 23:02 dis-slit   333(  274) 240  52  11.4 12.3 12.8 12.3 11.3   --  1.47
 01:25 ECHELLE   611( -591) 177  31  10.1  9.8 10.4 10.0  9.7   ND2  2.37
               ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    ------------------------------------------------------------------
     16:00    62    20     28   257  (WSW)   2653    clear     none
     17:00    61    19     21   264    (W)   3368    clear     none
     18:00    61    18     26   266    (W)   2218    clear     none
     19:00    59    15     30   263    (W)   3278    clear     dust
     20:00    55    15     20   256  (WSW)   2038    clear     dust
     21:00    54    14     24   269    (W)   2610    clear     none
     22:00    53    13     28   265    (W)   2069    clear     none
     23:00    52    13     24   268    (W)   1481    clear     none
     00:00    51    14     23   273    (W)   1268    clear     none
     01:00    50    15     25   291  (WNW)   1383    clear     none
     02:00    49    14     22   291  (WNW)   1291    clear     none
     03:00    49    15     29   272    (W)   1259    clear     none
     04:00    48    14     20   277    (W)   1435    clear     none
     05:00    45    15     21   313   (NW)   1879    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: 2.0.0