From:
Subject: 3.5m Night Log 20090405
Date: Mon,  6 Apr 2009 13:06:07 +0000 (UTC)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                         Sunday, April 5, 2009
                                                        ACTUAL
 ASTRONOMER      OBSERVER(S)            INSTRUMENT   START  FINISH
-------------------------------------------------------------------
 J.Coughlin      J.Coughlin             DIS          19:45  23:55
 T.Murphy        R.McMillan             APOLLO       00:00  01:00
 D.York          D.York                 DIS          01:05  06:00
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
----------------------------------------------------------------------
 NM07/R     20:21  00:05    0    0    0    0    0   3.7   0    0    0
 DD01/O     00:05  01:05    0    0    0    0    0   1.0   0    0    0
 UC05/R     01:05  05:50    0    0    0    0   0.9  3.8   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 Az velocity scale was 575.5, measured 577.5, changed to 577.0
 Alt velocity scale was -606.0, measured -605.8, no change
 After measuring the velocity scales I made a mistake closing the
 script window and had to use the Cancel button.  This put the TCC
 into an odd state where it wasn't seeing the telescope status
 updates even though other processes seemed to be going normally.  I
 had to restart the TCC in order to get it straightened out.
 Tonight we had thin variable clouds, with some periods of
 photometric skies, and moderate seeing.  Pointing was good, but with
 both APOLLO and DIS during the second half there were signs of poor
 tracking.  It's reasonable to expect this will improve with the
 engineering later in the week, but we'll have to keep an eye on it
 until then.  For the most part the guiding software was able to keep
 up with the drift so long as there was a good guide star.
                       ------- FAILURE LOG -------
  PROG   INST   FAILURE MODE     TIME
       (SEDFNVOG)   TI/SHU    START  FINISH  DESCRIPTION
 ----------------------------------------------------------------------
               ---------------- FOCUS LOG ---------------
 Time  Instrument  Focus     Az  El  Temp Strc Prim  Sec  Air  filt  FWHM
 ------------------------------------------------------------------------
 20:19 dis-slit   -50( -343)  19  81   0.7  2.2  1.7  1.2  0.9     1.50
 00:04 APOLLO     -25(  441) 303  57  -0.8 -0.8 -0.5 -1.5 -0.8     1.50
 01:11 dis-slit     9( -445) 240  60  -0.8 -1.2 -0.8 -2.0 -1.2     1.20
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    35     6      3   338  (NNW)    377  ptly cldy   none
     17:00    34     8      7   358    (N)    376  ptly cldy   none
     18:00    37     7     11   314   (NW)    376  ptly cldy   none
     19:00    36     5      9   356    (N)    370 mstly clr    none
     20:00    34     3      5   353    (N)    345    clear     none
     21:00    32     4      4   315   (NW)    374    clear     none
     22:00    32     4      5   342  (NNW)    302    clear     none
     23:00    31     5      7   317   (NW)        mstly clr    none
     00:00    31     6      9   354    (N)    331  ptly cldy   none
     01:00    30     7      5     1    (N)    330  ptly cldy   none
     02:00    30     7      8   344  (NNW)    293  ptly cldy   none
     03:00    30     5     20    32  (NNE)    386  ptly cldy   none
     04:00    31     4     13    39   (NE)    334  ptly cldy   none
     05:00    26     7     15    52   (NE)    307  ptly cldy   none
     06:00    28     5     13    38   (NE)    372  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