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Old 20-01-2015, 12:16 PM
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Bassnut (Fred)
Narrowfield rules!

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Join Date: Nov 2006
Location: Torquay
Posts: 5,064
If you bin2 OIII and SII for colour, use half the exposure time you use on Ha (at bin 1). Even if OIII and SII are still noisier, you can smooth them right out without effecting the final image much.
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