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Old 24-05-2018, 09:06 PM
cosmophoton (Luiz)
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cosmophoton is offline
Join Date: Jan 2013
Location: Belo Horizonte
Posts: 90
Dear Ray,

Thanks for your interesting spreadsheet! I'm trying to reproduce part of your results, especially the calculation of the item "FWHM in the chosen atm."
As I understood,

FWHM in the chosen atm = SQRT(seeingFWHM^2 + scopeFWHM^2 + (2.35*guidingRMS)^2)

I'm using Airy's formula
scopeFWHM = 1.028 * Lambda / ObjectiveDiameter.

My results are a bit far from the result of the spreadsheet. Where am I doing it wrong? Many thanks in advance!

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