Thread: Is GSO 9mm Plossl Really that Bad?
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Old 16-06-2014, 08:30 PM
jjz (Joe)
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Join Date: Apr 2014
Location: Melbourne
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Sorry if it's a little off topic can you explain how you cleaned them? I have a10 inch Dob and some GSO eyepieces and I can see some crud it at least one of them.

Thanks Joe
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