Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  IC 4263  ·  IC 4278  ·  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool Galaxy
Whirlpool Galaxy (M51) - LRGB - take 2, for details, dswtan
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Whirlpool Galaxy (M51) - LRGB - take 2, for details

Whirlpool Galaxy (M51) - LRGB - take 2, for details, dswtan
Powered byPixInsight

Whirlpool Galaxy (M51) - LRGB - take 2, for details

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Description

Added just an hour net to the previous processing of this after selecting subs more carefully for details, despite a 2hr session. It came out so differently I decided to post this as a separate image rather than a variant of the first run. Consider this one processed to emphasize details and a little sharper -- at the expense of some of the wispyness. Both seem valid to my eye!

So 3hrs total integration so far, still hoping for more before calling it done if weather permits. The wisps at the top were still a bit noisy, so this still uses Topaz Denoise AI to cover up that given the relatively short integration.

90x 60sec L2

35x 60sec RGB

Improvement from last year's noisy OSC effort on the same RC8 scope here: https://www.astrobin.com/lhpiet/0/

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Whirlpool Galaxy (M51) - LRGB - take 2, for details, dswtan

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