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Whirlpool Galaxy (M51) Widefield

The aptly named Whirlpool Galaxy (M51) floats against a field of stars, with other very small galaxies in view. One of the most iconic astroimaging targets is normally imaged at a higher magnification but still presents an impressive sight when imaged at a wider field of view. This image is a result of only 48 minutes of total data imaged through LRGB filters.

ZWO ASI1600MM-C Camera @ -20C and
Gain:139 Offset:21
Software Bisque MyT Mount
Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8

Pixinsight Commercial Version 1.8
Lightroom CC
Photoshop CC

Light Frames:
Luminance: 12 x 60 secs (12 mins)
Red: 12 x 60 secs (12 mins)
Green: 12 x 60 secs (12 mins)
Blue: 12 x 60 secs (12 mins)

Dark Frames:
20 x 60 secs (20 mins)

Additional info from Wikipedia:
The Whirlpool Galaxy, also known as Messier 51a, M51a, and NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus.[7][6][8] It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy.[9] Its distance is estimated to be 23 million light-years away from Earth.
The galaxy and its companion, NGC 5195,[10] are easily observed by amateur astronomers, and the two galaxies may be seen with binoculars.[11]

Whirlpool Galaxy (M51) Widefield