Thread: And so the Apo... Semi Apo argument goes on
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  #25  
Old 16-03-2019, 01:27 AM
Ukastronomer (Jeremy)
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Ukastronomer is offline 		 
Join Date: Jan 2019
Location: Llandysul, WALES, UK
Posts: 1,381
Even more confusing is, is a Semi Apo Filter what it says, or just a fringe killer ???
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