Thread: 800mm focal length refractor
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Old 28-10-2022, 12:32 PM
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MortonH
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MortonH is offline 		 
Join Date: Nov 2006
Location: Sydney
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Ken,

Probably a silly question but does the scope need a native focal length of 800mm or could you use a shorter/longer one with some kind of focal extender/reducer?
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