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I read at one point that although false colour in doublets isn't an issue with narrowband, the way triplets work will still give more sharpness through tighter focus. I'm not sure how much of a factor this is, but the narrowband imagers that put out those amazing pictures on astrobin all seem to use triplets.
Edit: autocorrect as usual
Last edited by tvandoore; 24-03-2019 at 01:29 PM.
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