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New GSO classic cassegrain.
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28-11-2018, 09:12 AM
doug mc
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Join Date: Feb 2007
Location: Mt Tamborine
Posts: 590
Due to the fact that i have not read Suiters book on optics, i will leave star testing to someone who knows what they're talking about. I will be happy counting craterlets on the floor of Plato when seeing allows.
doug mc
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