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Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Robert May on September 26, 2001 03:39:46 UTC |
The focal length of the scope pretty much determines the size of the EP that you use for a particular amount of magnification. For example, if you need 400x to see a planet, it takes a 2.5mm EP with a 1000mm scope which is a very short FL EP. A longer FL scope will make the size of the EP larger which will make it easier to view the planet and also allow for more magnification. I might also note that to get to 400x you do need a scope of 200mm in diameter to get useful magnification. |
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