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5nm vs 3nm Ha Filters- the NII question
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27-07-2016, 10:55 AM
RickS
(Rick)
PI cult recruiter
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
I went with 3nm Ha and the only time I regretted it was on the Helix. The 3nm filter is bulletproof when it comes to imaging under moonlight!
Cheers,
Rick.
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