Usage of effectiveTaper

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Converts an observed value of the constant X in the formula FWHM=X*lambda/D into a taper in dB (positive value), using the inverse of (Baars' formula multiplied by the central obstruction factor). See also baarsTaperFactor and centralObstructionFactor.

Usage:

au.effectiveTaper(fwhmFactor=1.16, diameter=12, obscuration=0.75, use2007formula=True)
  • if use2007formula==True, use: Equation 4.13 for Baars (2007) book
  • if use2007formula==False, use: Equation 18 from ALMA memo 456

Example:

CASA <3>: au.effectiveTaper()
  Out[3]: 12.919999999999938

-- ToddHunter - 2013-07-11

This topic: ALMA > TWikiUsers > ToddHunter > CasaExtensions > EffectiveTaper
Topic revision: 2013-08-12, ToddHunter
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