Into the Maelstrom: M101 The Pinwheel Galaxy (RGB and HSO Continuum Subtracted) (Franklin Marek)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: HD122471 · HD122865 · M 101 · NGC 5422 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · NGC 5473 · NGC 5474 · NGC 5477 · NGC 5484 · NGC 5485 · NGC 5486 · Pinwheel galaxy

Into the Maelstrom: M101 The Pinwheel Galaxy (RGB and HSO Continuum Subtracted)

Combining over 13hrs of RGB and 28hrs of SHO narrowband to reveal the galactic maelstrom in the heart of M101 The Pinwheel Galaxy.

I struggled with how I wanted to present the data and settled on an RGB-Continuum Subtracted HSO Foraxx Palette, I am presenting the full RGBHSO version and just the HSO foraxx versions. I kept the stars in both and I thought it added to the images.

What I find really surprising are the structures not only in M101 but in NGC5474, NGC5477, and NGC5486. There are some HII regions designated in the SRM2012 catalog, especially for NGC5474, but the others really haven't been studied much.

The other very cool item is NGC5471. There is really nice structure in all 3 narrowband channels and Hubble actually did some observing on it as well.

All this data screams for some interaction, so please check out the interactive slider I made for this image too (should work on desktop and mobile)!

https://www.setiastro.com/m101slider

Video I made on my capture and image: https://youtu.be/OyvWC2F5hyw

Some close in crops of all the detailed structure!
m101fade-1.mp4

M101

NGC5474

NGC5477

NGC5486

NGC5471 with Hubble images

Final
Original
B
D

Galaxies Explorers in Hydrogen

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Status	Advanced success
Started	...
Astrometry.net job	9526545
PixInsight job	SIYJJ94B0F7HGUKZ19D2IOCXAQRUHJJY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m43s.330
RA (top/left)	13h59m34s.234
RA (top/right)	13h59m53s.351
RA (bottom/right)	14h07m42s.280
RA (bottom/left)	14h07m43s.402

Dec (center)	+54°23′17″.58
Dec (top/left)	+55°15′16″.17
Dec (top/right)	+53°29′56″.58
Dec (bottom/right)	+53°30′49″.22
Dec (bottom/left)	+55°16′08″.72

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Into the Maelstrom: M101 The Pinwheel Galaxy (RGB and HSO Continuum Subtracted)

Into the Maelstrom: M101 The Pinwheel Galaxy (RGB and HSO Continuum Subtracted)

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Image Index:

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Into the Maelstrom: M101 The Pinwheel Galaxy (RGB and HSO Continuum Subtracted)

Into the Maelstrom: M101 The Pinwheel Galaxy (RGB and HSO Continuum Subtracted)

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