Thread: [NOT REQUIRED] 12"-ish, f/7-ish primary mirror.
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  #9  
Old 18-07-2019, 05:50 PM
Wavytone
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Wavytone is offline 		 
Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
Could take a 17” f4.5 and cut it down to size