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Old 30-01-2010, 09:16 PM
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hulloleeds
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Join Date: Jul 2009
Location: Brisbane
Posts: 112
If one were to get a neutral density filter for Jupiter / Mars viewing, what % transmission would be best?

(Andrews have 50,23 and 13% ones nice and cheap).

That's for a 12 inch dob, if that is atall relevant.
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