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Are cheap wide-view eyepieces kellners?
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08-04-2011, 11:00 AM
mental4astro
(Alexander)
kids+wife+scopes=happyman
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,995
Jason look at "Cooke 5 Lens", p 32, a Kellner variant, with the characteristics of the GSO Kellner,
.
Just being the Devil's advocate,
.
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