Thread: Long Focal Length and fast imaging -does it exist?
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Old 04-10-2015, 12:09 PM
glend (Glen)
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Join Date: Jun 2013
Location: Lake Macquarie
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Long Focal Length and fast imaging -does it exist?
Is there a way to get a 2000mm focal length in a f5 imaging scope? Sure a big newt would get there with a 400mm primary but would break my mount. Is there a light weight option, say 15kg max?
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