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NGC253 with Ha
SPX350 F4.5, ATK-16HR, Astrodon filters, Ha 5nm.
Had to attempt this big bright galaxy and added Ha as most don't but it does contain spots of HII. A bit disappointed with the detail with a large scope as its pretty similar to others here using smaller instruments, but a facinating galaxy all the same.
LL HaRGB.
L=2hrs in 5min
Ha=10x10min
RGB=6x5min subs.
Regards, John.
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