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How do I find the apparent field of view (aFOV) of a eyepiece using simple math (if possible)? I need the aFOV to give as a value to Stellarium’s custom eyepiece
I found a Q&A about this subject but, I don’t fully understand the math:
On my eyepiece it says “Gskyer® 5mm” Also see photo below.
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asked Jan 19, 2022 at 21:19
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