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Old 07-01-2011, 05:31 PM
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mswhin63 (Malcolm)
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Join Date: May 2009
Location: Para Hills, South Australia
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Limitation as express in magnitude. For a 70mm 900mm FL it is about -11 to -12 in dark skies. Most star charts of software can tell you the magnitude of stars and nebula. Visibility will be less in suburbs. This is assumed by the technical specs of a scope are usually based on good dark skies.
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