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Hi guys... I done the dark library of GAIN 120 with 30 sec, 60 sec, 90 sec, 120 sec, 180 sec, 240 sec and 300 sec.
I forgot to tell, I have a tri-band Narrowband filter for OSC that work on Bortle 5 - 9 skies... should I make more than 300 secs exposure (eg.500 secs, 600sec or more)? or the 300 secs should be enough with triband narrowband filter usage?
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