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3nm Ha versus 5nm Ha
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27-08-2013, 10:36 AM
RickS
(Rick)
PI cult recruiter
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Greg,
I don't find there is really a need to expose for longer. You still get the same amount of true Ha signal through either filter. The only difference is that the 3nm filter rejects more spurious stuff.
Cheers,
Rick.
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