hi Luiz
the spreadsheet includes Airy's formula for the optics, but converted to arcseconds and added in quadrature in the complete FWHM calculation. hope this helps.
the complete FWHM formula is: FWHM in the chosen atm = SQRT(seeingFWHM^2 + scopeFWHM^2 + (2.35*guidingRMS)^2). It combines seeing effects, scope resolution and guiding blur.
Cheers Ray
Last edited by Shiraz; 25-05-2018 at 10:28 AM.
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