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Old 16-02-2012, 05:55 PM
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Satchmo
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Join Date: Dec 2005
Location: Sydney
Posts: 1,876
you need to consider the exit pupil situation.

For daytime solar observing your pupil will probably be around 2mm or less. If the typical seing handles only say 50X then you will not gain resolution in anything over 100mm aperture.
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