Thread: Working out best focal length for planetary imaging with a Dobsonian
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Old 09-06-2021, 08:27 PM
DJT (David)
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Join Date: Nov 2011
Location: Sydney
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This is a great article in sky and telescope from a few years back. Nice image showing the relationship between sensor and focal length and target type

http://www.skyandtelescope.com/astro...educers/4/?c=y

Cheers
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