Subject: 3.5m Night Log 20081210
Date: Thu, 11 Dec 2008 07:19:15 +0000 (UTC)
From: bketzeba@apo.nmsu.edu
                        Apache Point Observatory
                        3.5m Telescope Night Log
                      Wednesday, December 10, 2008
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 E.Burgh         K.France               Nicfps        --:--  --:--
 G.Wallerstein   G.Wallerstein          Echelle       --:--  --:--
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 CU08/R     17:55  00:00    0    0    0   6.1   0    0    0    0    0
 UW14/R     00:00  05:58    0    0    0   6.0   0    0    0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: B.Ketzeback
 Earlier today while trying to troubleshoot problems with the rotation
 axis of the tertiary the day staff encountered a serious series of
 problems with the M3 control electronics. Nick and Dave worked on the
 problem until late in the evening. They were confident they had solved
 the problem and went home. I had some problems openning up the mirror
 covers and by the time I was ready to do my first slew of the night
 they had left for the evening. As soon as I slewed the telescope
 the tertiary galil reported an error regarding one or more of the
 motor amplifiers having faulted. I tried several things to clear the
 error including power cycling the galil but it would not clear.
 Nick returned to the site and we worked on the problem until midnight
 at which point we were stumped. We suspect it is a further issue
 with the PCB1 control board that they had so much trouble with earlier
 today. Dave and Nick will resume troubleshooting in the morning.
 The telescope is unusable for the remainder of the night.
 Thanks go out to Dave, Nick and John B. for trying to resolve the
 problem late into the evening.
 I am spending the rest of the night working on other projects such as
 fastcam reductions.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
 CU08      N         T/H      17:55  00:00 Tert failure, can not command accq
 UW14      E         T/H      00:00  05:58 Tert failure, can not command accq
               ---------------- FOCUS LOG ---------------
 Time Instrument    Focus   Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
 -----------------------------------------------------------------------
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    39    21     10    83    (E)     85    clear     none
     17:00    36    21      5    85    (E)     49    clear     none
     18:00    35    20     11    41   (NE)     53    clear     none
     19:00    35    19     13    70  (ENE)    167    clear     none
     20:00    34    19      5    25  (NNE)     81    clear     none
     21:00    35    18     19    66  (ENE)    102    clear     none
     22:00    35    17     15    59  (ENE)    103    clear     none
     23:00    33    18      8    63  (ENE)     80    clear     none
     00:00    33    18      4   236   (SW)     61    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: 2.9.1
      Current TUI version: TUI 1.5.1