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Old 10-11-2018, 10:47 AM
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Atmos (Colin)
Ultimate Noob

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Join Date: Aug 2011
Location: Melbourne
Posts: 6,982
Gain 76 will get you the full 12 bits and I found at F/5 180s worked RGB and 120s L.
At Gain 139 you hit unity which I’ve used 400s with 3nm narrowband.
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