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% @(#)disperhoug.hlq 19.1 (ESO-IPG) 02/25/03 14:28:41
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%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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%.COPYRIGHT (c) 1993 European Southern Observatory
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%.KEYWORDS MIDAS, help files,
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%.PURPOSE On-line help file for the command: DISPERSION/HOUGH
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%.VERSION 1.0 22-MAR-95 : Creation, PB
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%----------------------------------------------------------------
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DISPERSION/HOUGH 22-MAR-95 PB
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DISPERS/HOUGH [wdisp] [wcent] fr_specs [line] [cat] [mode] [range] [vflag]
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Determination of dispersion relations by HT
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This low-level command is used in the Long and Echelle packages
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to determine dispersion relations by Hough transform. A number
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of default keywords (AVDISP, WCENTER, LINTAB, LINCAT) are
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supposed to exist in the calling package.
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DISP/HOUGH [wdisp] [wcent] fr_sp [line] [cat] [mode] [range] [vfl]
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wdisp = Average dispersion, defaulted to session keyword \\
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wcent = Central Wavelength, defaulted to session keyword \\
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fr_sp = frame specifications, as npix,start,step
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line = Name of line table, defaulted to keyword LINTAB
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cat = Name of line catalog, defaulted to keyword LINCAT
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mode = Method (LINEAR,1D,3D,NOLINEAR). Default: LINEAR
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range = Range of influence function. Default: 2.5
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vflag = Visualisation flag (Keep/NoKeep/Visualize) \\
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Keep will store the HT on disk (in file middummh.bdf) \\
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Visualize will display the HT.
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For a description of the method see Ballester, 1994,
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Astron. Astrophys., 286, pp. 1011-1018.
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DISPERSION/HOUGH ? ? {IMSIZE(1)},1.,1.