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Different types of Eyepieces: Kellners, Orthos, Plossls

http://www.singastro.org/forum2/viewtopic.php?t=5151

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Different types of Eyepieces: Kellners, Orthos, Plossls

Posted: Mon Jul 02, 2007 5:19 pm
by mrngbss
An article which brings light and power to us:

http://www.rtpnet.org/chaos/RA/eyepieces.html
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