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SOLVE FOCUS

      CLIC\SOLVE FOCUS [/PLOT] [/COMPRESS timex] [/PRINT]
      [/OUTPUT filename [NEW]] [/TOTAL] [/FIX par1 [value] ...]

  *** THIS HELP HAS NOT BEEN UPDATED FOR THE NGRX ***

  Find focus corrections from a FOCUS scan using a parabolic fit.  All focus
  scans in the current index are processed.  All continuum subbands and both
  side bands are averaged.  SET AVERAGE METHOD SCALAR is  recommended.   The
  fits may be displayed with option /PLOT.

  The  option /COMPRESS may be used to average data in a given time interval
  before processing, to improve the signal-to-noise  ratio.   Default  is  4
  seconds.

  The  presence  of  option  /PRINT produces a procedure file (INTER_OBS:fo-
  cus.obs), to be used in OBS for introducing the fitted focus offset.  With
  option  /OUTPUT,  results of the fit, together with elevation and azimuth,
  are written in an output ASCII file, for further examination.

  ****** ATF CORNER ******

  With option /TOTAL, SOLVE FOCUS uses the total power to  solve  for  axial
  focus  errors. In that case, option /FIX may be used to fix one parameter.
  Possible parameters are:

      FOCUS: the axial focus error (mm)
      PEAK: the peak amplitude, in total power units
      WIDTH: the HPW of focus curve  (mm)
      ZERO: the off-source zero level, in total power units

  With /TOTAL, /COMPRESS does the ON-OFF combination if  in  beam  switching
  mode.  In  that  case  ZERO is preferrably fixed to zero (e.g. SOLVE FOCUS
  /TOTAL /COMPRESS /PLOT /FIX ZERO 0).


Gildas manager 2011-04-01