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Lens for DIY refractor?
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05-12-2018, 02:09 PM
AstroApprentice
(Jason)
Registered User
Join Date: Dec 2015
Location: Melbourne, Australia
Posts: 349
I-Star 250 mm F/20!!!
Thanks guys,
The i-star lenses look very promising
http://www.istar-optical.com/r30%2c-...-doublets.html
I particularly like the look of the 180 mm F/8 - most of the others would require incredibly long tubes - such as the 250 mm F/20 5000 mm FL!!!
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