M101 - The Pinwheel Galaxy in LHaRGB (Cfosterstars)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5451 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5471

M101 - The Pinwheel Galaxy in LHaRGB, Cfosterstars

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M101 - The Pinwheel Galaxy in LHaRGB

Revision title: Reprocess with new AI workflow

Powered byPixInsight

M101 - The Pinwheel Galaxy in LHaRGB

Revision title: Reprocess with new AI workflow

This is from data I took in 2020 that I just now got around to process of one of my favorite Messier Galaxies taken with my Meade 10" ACF SCT. My previous image was with my APO.

From Wikipedia: The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs) away from earth in the constellation Ursa Major. M101 is a large galaxy, with a diameter of 170,000 light-years. By comparison, the Milky Way has a diameter of 100,000 light years. It has around a trillion stars, ten times the amount in the Milky Way.[11] It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.

M101 is noted for its high population of H II regions, many of which are very large and bright. H II regions usually accompany the enormous clouds of high density molecular hydrogen gas contracting under their own gravitational force where stars form. H II regions are ionized by large numbers of extremely bright and hot young stars; those in M101 are capable of creating hot superbubbles. In a 1990 study, 1264 H II regions were cataloged in the galaxy. Three are prominent enough to receive New General Catalogue numbers - NGC 5461, NGC 5462, and NGC 5471.

M101 is asymmetrical due to the tidal forces from interactions with its companion galaxies. These gravitational interactions compress interstellar hydrogen gas, which then triggers strong star formation activity in M101's spiral arms that can be detected in ultraviolet images.

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Title: Reprocess with new AI workflow

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Astrometry.net job	8044520
PixInsight job	3136S5KDMOK84IT6R57KW9Q0C4KLJVGQ
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M101 - The Pinwheel Galaxy in LHaRGB

Revision title: Reprocess with new AI workflow

M101 - The Pinwheel Galaxy in LHaRGB

Revision title: Reprocess with new AI workflow

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M101 - The Pinwheel Galaxy in LHaRGB

Revision title: Reprocess with new AI workflow

M101 - The Pinwheel Galaxy in LHaRGB

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