Thread: And so the Apo... Semi Apo argument goes on
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Old 10-03-2019, 08:44 AM
Wavytone
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Wavytone is offline 		 
Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
Call them doublet and triplet, stop worrying about it, relax and enjoy your scopes when the weather permits !
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