Pinwheel Galaxy and Companions (Andre Vilhena)

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 · Pinwheel galaxy

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Pinwheel Galaxy and Companions

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Pinwheel Galaxy and Companions

This is my first take on M101, the beautiful grand design spiral galaxy in constellation Ursa Major. In this photo it is also possible to see some companions galaxies, forming the M101 Group, most notably NGC 5474, on the left. It is a peculiar dwarf galaxy, the closest one to M101, where the nucleous is offset in regards to the disk due to gravitacional pull from M101. It also has some Ha regions and has a slight spiral structure, making it a spiral dwarf galaxy, a fairly uncommon type. Pretty cool, isn't it?...

It is an HaLRGB photo with not too many integration time and therefore careful noise reduction was needed. In addition, the enhancement of blue and Ha regions was critical. Since weather has been lousy for some time now, I took my time to get it right and learn new techniques from @Adam Block instruction videos.
It is not a spectacular result but again, for the small integrayion time and light pollution is not too bad.
Hopefully by next year I'll be able to gather more data.

Hope you enjoy - comments and constructive criticism are most welcome!

Original
Final
B

B

Description: Due to bad weather in the last couple of months, and following new learnings with @CWTauri, decided to re-process the M101 data I had. Honestly, I am really surprised by what came out, which I think is way better than previous one!

Uploaded: ...

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Trevinca Skies

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Status	Advanced success
Started	...
Astrometry.net job	6724253
PixInsight job	B8QJVVPC0N5LGAS42SY135TCPW3V2BEU
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m29s.99
RA (top/left)	14h09m38s.45
RA (top/right)	14h05m39s.72
RA (bottom/right)	13h57m07s.88
RA (bottom/left)	14h01m27s.49

Dec (center)	+54°21′00″.7
Dec (top/left)	+53°34′38″.2
Dec (top/right)	+55°29′53″.9
Dec (bottom/right)	+55°06′21″.3
Dec (bottom/left)	+53°12′01″.8

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Pinwheel Galaxy and Companions

Pinwheel Galaxy and Companions

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Pinwheel Galaxy and Companions

Pinwheel Galaxy and Companions

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