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Reload this Page 120 mm F/12.5 doublet
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Old 15-01-2020, 05:45 AM
AstroApprentice (Jason)
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Join Date: Dec 2015
Location: Melbourne, Australia
Posts: 349
120 mm F/12.5 doublet
Rare to see someone making what appears to be a quality long focus doublet...
http://www.frtelescopes.com/frt120ded.html
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Old 15-01-2020, 07:36 AM
Wavytone
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Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
Agreed - a good find too ... but hard to mount and probably $7k here for what is still only a 5” aperture.
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