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Narrowband Imaging into Astro Dawn - How Far?
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20-04-2016, 02:57 PM
Atmos
(Colin)
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Join Date: Aug 2011
Location: Melbourne
Posts: 6,984
I have personally found that it starts having an effect from 45-60 minutes before sunrise. Your best bet is simply to keep imaging and then remove the final sub (pushing time wise) if the background becomes too bright.
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