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Old 14-01-2020, 11:17 AM
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Astrofriend (Lars)
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Join Date: Aug 2017
Location: Stockholm, Sweden
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Filter vignetting calculator

A friend ask me about filter size, I already had a Excel sheet with that calculation. But I did a new web calculator.

It's the first version but it looks to calculate it correct, have a look:
http://www.astrofriend.eu/astronomy/...ignetting.html

It's not any high precision calculation, but gives knowledge enough I think.

Too small filter gives vignetting, too big filter empty the wallet.

/Lars
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