Different types of Eyepieces: Kellners, Orthos, Plossls

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mrngbss
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Different types of Eyepieces: Kellners, Orthos, Plossls

Post by mrngbss »

An article which brings light and power to us:

http://www.rtpnet.org/chaos/RA/eyepieces.html
Wee Nghee the Pooh
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