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Old 12-01-2017, 11:05 AM
Star Hunter
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Star Hunter is offline
 
Join Date: Dec 2011
Location: Ellesmere, Qld
Posts: 208
IR Blocking filters: Do I need one?

I'm getting a new ZWO 071 CCD next week for a 11" RASA and been reading one needs a Luminance IR blocking filter to block any IR from interfering with Ha regions. Is this right?

Jim
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