Date: Wed, 14 Oct 2009 06:51:48 -0600 (MDT)
Subject: 3.5m Night Log 20091013
From: "Jack Dembicky"
                        Apache Point Observatory
                        3.5m Telescope Night Log
                       Tuesday October 13, 2009
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 A.Brown        A.Brown                 DIS           18:25  00:00
 B.Ketzeback    J.Dembicky              Echelle       --:--  --:--
 W.Bhatti       W.Bhatti                DIS           04:15  06:36
  PROG        SCHEDULED      WEATH     EQUIP      OBS     NOT USED
 I/ROW/DN   START  FINISH    D    B    D    B    D    B    D    B
 ------------------------------------------------------------------
 CU02/R     18:41  01:00    1.0   0    0    0   5.3   0    0    0
 NM10/O     01:00  02:00    1.0   0    0    0    0    0    0    0
 JH08/R     02:00  06:58    1.2  1.0   0    0    0   2.7   0    0
  note: scheduled times listed include instrument chanyes, some ge time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: J.Dembicky
Az servo error UT 03:06:40  Az 234.8, Alt 58.0.  Axis stop, stop button in/out, axis init fixed
the problem.
Az Servo Error UT05:33:38 Az 239.0, Alt 36.1 Same fix as above
UT 05:44 Drives started oscillating Az 235.7 Alt 40.1, stopped drives and restarted (same as
above).  Oscillation gone.
UT 06:06 Dewpoint sensor for 3.5m went crazy (500%+ humidity), SDSS was reading 89%.  It went
crazy for about 5 mins.  I used the SDSS readings instead.
We closed at 00:00 due to humidity, re-opened at 04:15
                ------------- FAILURE LOG --------------
  PROG   INST   FAILURE MODE     TIME
      (STEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus    Az  El  Temp Strc Prim  Sec  Air  filt FWHM
 -----------------------------------------------------------------------
 19:15 dis-slit   122(  303) 221  75  10.6 11.9 11.3 11.3 11.1   --  1.25
 20:43 dis-slit   115(  241) 234  62  10.7 10.7 10.8 10.2 10.4   --  1.11
 04:28 dis-slit   226(  255) 191  52   8.4  8.5  9.5  7.7  8.2   --  1.43
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     17:00    55    42     26   267    (W)    240  ptly cldy   none
     18:00    53    41     22   269    (W)    196 mstly clr    none
     19:00    51    42     14   248  (WSW)    261 mstly clr    none
     20:00    51    42     13   265    (W)    192    clear     none
     21:00    51    40     17   270    (W)    241    clear     none
     22:00    51    40     16   261    (W)    226    clear     none
     23:00    50    40     19   268    (W)    256    clear     none
     00:00    49    45     17   264    (W)    266    clear    humid
     01:00    48    44     14   266    (W)    306 mstly cldy   fog
     02:00    48    47     17   267    (W)    215 mstly clr   humid
     03:00    47    45     14   265    (W)    241 mstly clr   humid
     04:00    48    41     11   278    (W)    258 mstly clr    none
     05:00    48    40     10   264    (W)    268  ptly cldy   none
     06:00    47    36      9   273    (W)    368  ptly 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: TUI 1.6.2