2013-01-18-elliptic-beams-fwhm-and-ellipticity.md

layout	title	date	categories	slug
post	Elliptic beams, FWHM and ellipticity	2013-01-18 00:58	astrophysics	elliptic-beams-fwhm-and-ellipticity

The relationship between the Full Width Half Max, FWHM (min, max, and average) and the
ellipticity is:

FWHM = sqrt(FWHM_min * FWHM_max)
e = FWHM_max/FWHM_min