Thread: H alpha Newbie Questions
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Old 12-05-2009, 02:06 PM
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multiweb (Marc)
ze frogginator

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Join Date: Oct 2007
Location: Sydney
Posts: 22,062
Cool pic Doug Yeah I just keep the red channel for Ha. The core burns out pretty quick. At f/5 on the ED80 , 10min subs is pushing it. I guess you can do masks with different exp time in PS like M42 just for the keyhole area.
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