From:
Subject: 3.5m Night Log 20090206
Date: Sat,  7 Feb 2009 13:20:42 +0000 (UTC)
                        Apache Point Observatory
                        3.5m Telescope Night Log
                        Friday, February 6, 2009
                                                         ACTUAL
 ASTRONOMER      OBSERVER(S)              INSTRUMENT   START  FINISH
 -------------------------------------------------------------------
 A.Becker        A.Becker                 Agile        19:30  00:05
 T.Harrison      D.Hoffman                Echelle      00:15  07:30
   INST     SCHED(TWILIGHT) WEATH     EQUIP      OBS     DAY  NOT USED
 I/ROW/DN   START  FINISH   D    B    D    B    D    B   USE   D    B
 ----------------------------------------------------------------------
 UW02/R     18:36  00:10    0    0    0    0    0   5.6   0    0    0
 NM07/R     00:10  06:00    0    0    0    0   0.5  5.3   0    0    0
  note: scheduled times listed include instrument change time
                ------------- ACTIVITY LOG --------------
 Observing Specialist: R.McMillan
 We were a little late getting on the sky tonight, by the observer's
 choice.  This choice arose partly from some delays in getting Agile
 initiated for lamp calibrations (the work was done by Anjum so I
 don't know all the details), but it was also based on the scientific
 needs of the program, so I decided to list the time as used.
 The night was variably cloudy but mostly usable, with good seeing
 whenever we checked it; since the first-half observer was working
 deliberately out of focus and the second-half observer was putting
 targets on a slit, only a few spot-checks were possible.  Pointing
 was good with Agile (I made an adjustment of -50 in Xtilt and +50 in
 Ytilt which is barely meaningful) and perfect with the echelle.
 When the Agile target went through a high northern transit, some
 tracking drift was noticeable despite constant guiding.  Again, it
 was a little difficult to assess because of the defocus, but it did
 seem that we got several arcseconds of drift in the course of about
 an hour following transit (the hour before transit was mostly taken
 up with cloud struggles).  I compensated by using the Nudger to keep
 the target in position, which seemed to work well enough.
                       ------- 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
 --------------------------------------------------------------------------
 19:50 AGILE  -300( -625) 132  54   7.0  7.4  7.1  6.8  6.6      I  0.90
 00:24 ECHELLE  -186(-1016) 159  66   6.4  5.5  5.8  5.1  5.5   ND2 1.00
                ------------- WEATHER LOG ----------------
                                   Wind                      Precip.or
     Time   Temp F Dewp F  MPH  Direction    Dust    Sky    Conditions
    -------------------------------------------------------------------
     16:00    50     4     17   265    (W)    696 mstly clr    none
     17:00    48     5     11   270    (W)    739 mstly clr    none
     18:00    44     5     14   250  (WSW)    809 mstly clr    none
     19:00    44     6     11   237  (WSW)   1237  ptly cldy   none
     20:00    44     6     14   260    (W)   1304  ptly cldy   none
     21:00    44     7     15   230   (SW)   1602  ptly cldy   none
     22:00    44     3     17   231   (SW)   1122  ptly cldy   none
     23:00    44     2     22   247  (WSW)    577  ptly cldy   none
     00:00    44    -3     22   214   (SW)    465  ptly cldy   none
     01:00    41    -2     20   225   (SW)    456  ptly cldy   none
     02:00    42    -3     20   240  (WSW)    320  ptly cldy   none
     03:00    40    -3     11   249  (WSW)    272  ptly cldy   none
     04:00    41     1     17   234   (SW)    335  ptly cldy   none
     05:00    42     4     19   208  (SSW)    356 mstly clr    none
     06:00    41     5     22   210  (SSW)    450 mstly clr    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