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2" Baader contrast booster
Looking for a second hand 2" Baader Contrast Booster. Have a Semi-Apo filter which is okay for a little CA reduction in my ST120 f5 Achromat but keen to explore a more extreme option if it isn't too pricey. Would consider a 1.25" version too if someone has one they don't need.
Last edited by Benjamin; 28-03-2016 at 09:40 PM.
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