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src/idl_misc/JPBLib_for_Dustemwrap/General/fwhm2beamsr.pro 129 Bytes
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6db3528a   Jean-Philippe Bernard   adding librairies... 
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FUNCTION fwhm2beamsr,fwhm

;fwhm in deg
;beamsr in sr

beamsr=!pi/4./alog(2.)*(fwhm/!radeg)^2 ;sr (Wikipedia

RETURN,beamsr

END