Thread: Planetary Neb.: brighter in f/4 than f/4.5 & f/5, alot brighter
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Old 07-03-2010, 07:14 PM
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orestis
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Join Date: Jun 2009
Location: southern highlands, Australia
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hi guys i was looking for a 8 '' dob or a 10'' dob.i'd like to buy the 8'' if its better because its cheaper .which scope is better for deep sky objects i'm confused...

thanks in advance.
orestis
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