From:
Subject: 3.5m Night Log 20090704
Date: Sun,  5 Jul 2009 11:42:24 +0000 (UTC)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Saturday, July 4, 2009
                                                         ACTUAL
 ASTRONOMER     OBSERVER(S)             INSTRUMENT    START  FINISH
 -------------------------------------------------------------------
 J.Bally        J.Bally,T.Bowers,       Tspec         20:15  20:35
                S.Jacobson
 T.Yan          T.Yan                   Tspec         03:05  05:40
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ---------------------------------------------------------------------
 CU02/O     21:18  01:05    0   3.8   0    0    0    0    0    0    0
 CU01/R     01:05  04:58    0   2.0   0    0   0.6  1.3   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Despite an unfavorable forecast, we had a clear patch shortly before
 sunset.  It wasn't quite as good AT sunset, with a storm heading our
 way and patchy clouds moving unpredictably.  The observers managed
 to get a spectrum of one object in twilight, not scientifically
 useful but good for training purposes.  After we closed, there
 was thunder and lightning and later some rain.  With the clouds
 moving through I didn't get a solid focus or seeing estimate.
 Second half we opened for another hole between storms, and this time
 conditions stayed usable, although still not wonderful, with poor
 seeing and occasional clouds moving through.  The observer got good
 data on a bright backup target and questionable-but-maybe-usable
 data on a primary science target.
 Everything worked reasonably well despite a few mistakes due to my
 being out of practice.  There was one case of an image jump which we
 puzzled over for a while -- it was a small jump of about 1 arcsec,
 but the guider didn't get a chance to correct it because a nod
 offset came shortly after.  We couldn't completely rule out the nod
 offset itself or observer error as the cause of the jump, so we'll
 just have to watch out for possible repeats without complicating
 circumstances.
                ------------- ACTIVITY 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
 -----------------------------------------------------------------------
 03:12 TSPEC   250(  917) 183  55  14.3 15.4 15.8 14.5 14.4   Ks  1.50
                 ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    67    57      6   201  (SSW)    537  ptly cldy   none
     17:00    67    56      9   211  (SSW)    540  ptly cldy   none
     18:00    66    54      6   282  (WNW)    523  ptly cldy   none
     19:00    64    52      6   271    (W)    485  ptly cldy   none
     20:00    61    53      2   270    (W)    469 mstly cldy   none
     21:00    60    51      3   331  (NNW)    451   cloudy     none
     22:00    60    50      1   253  (WSW)    436   cloudy     none
     23:00    58    50     12    53   (NE)    677   cloudy     rain
     00:00    56    50     15    57  (ENE)    542   cloudy     rain
     01:00    59    44     12    46   (NE)    449 mstly cldy   none
     02:00    54    50      4   356    (N)    423 mstly cldy   none
     03:00    58    46      7     9    (N)    436  ptly cldy   none
     04:00    57    48      9     5    (N)    463  ptly cldy   none
     05:00    57    47     16    26  (NNE)    347  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: 2.10.0
      Current TUI version: TUI 1.5.1