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What does Plossl mean ?
Can anyone tell me whether Plossl is just a name or whether it has an actual technical background. Everyone's speaks of Plossl, it seems that everyone makes them, I even own a whole set of them made by Meade, but a Google did not reveal what a Plossl actual refers to. Surely there must be some official description which makes them differ from non-Plossl ?
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