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Old 20-06-2012, 09:33 AM
casstony
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casstony is offline
 
Join Date: Feb 2006
Location: Warragul, Vic
Posts: 4,494
Thanks for the info and link Allan. That matches my visual observations. I had about 145mm total separation representing a 0.52 reduction of ~f/11.5 SCT, ending up with about f/6 effectively. It should work well behind the 12" too but I haven't had a chance to try it yet.
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