Thread: And so the Apo... Semi Apo argument goes on
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  #19  
Old 15-03-2019, 08:05 PM
Ukastronomer (Jeremy)
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Ukastronomer is offline 		 
Join Date: Jan 2019
Location: Llandysul, WALES, UK
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Well, YES or NO can a doublet be an APO scope ?
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