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Stille

28 Noi 2018 09:00



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Tipul de ocular 
http://www.nightskyinfo.com/eyepieces/
R = Ramsden
SR = Symmetric Ramsden
H = Huygens
MA e probabil Modified Achromat ( http://www.swindonstargazers.com/beginners/eyepieces.htm )

