Spectacular details man. The structures within the nebula are spot on. Red channel is a bit strong, but [SII] is really weak in NGC 281. Did you try channel combination i.e. modified Hubble palette? Something like, say:
R -> [SII] + ((Ha x 0.4) + ([OIII] x 0.6))
B -> [OIII]
G -> Ha
It just evens out the [SII] channel without getting fringes on the high frequency areas around the stars.
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