The Pinwheel Galaxy: M101 in HaLRGB (Bogdan Borz)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · Pinwheel galaxy

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The Pinwheel Galaxy: M101 in HaLRGB

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The Pinwheel Galaxy: M101 in HaLRGB

"Why do many galaxies appear as spirals? A striking example is M101, shown above, whose relatively close distance of about 27 million light years allows it to be studied in some detail. Observational evidence indicates that a close gravitational interaction with a neighboring galaxy created waves of high mass and condensed gas which continue to orbit the galaxy center. These waves compress existing gas and cause star formation. One result is that M101, also called the Pinwheel Galaxy, has several extremely bright star-forming regions (called HII regions) spread across its spiral arms. M101 is so large that its immense gravity distorts smaller nearby galaxies. " (from APOD june 2015)

Well, this one was really tough, due to the reflections on my coma corrector and the light pollution. I had to crop the field in order to be able to extract the gradients, since this is impossible to do when I enlarged the crop size by 50-100 pixels. The image was pretty noisy, but I tried to emphasize the details of the core and the active Ha centers (deconvolution really helped in improving the details and the star size).

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C

PixInsight Addicts
Light Polluted skies
ZWO ASI1600MM/QHY163M
AAA : Astronomes et Astrographes Amateurs
AstroBin Platform open discussions community forum
Astrophotographes (France)
Narrowband imaging

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Status	Advanced success
Started	...
Astrometry.net job	3421259
PixInsight job	EY8HSQ1KWOYIN70K9I2ZV2C098KYX4W4
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	14h03m13s.786
RA (top/left)	14h01m36s.690
RA (top/right)	14h01m29s.997
RA (bottom/right)	14h04m50s.256
RA (bottom/left)	14h04m58s.611

Dec (center)	+54°22′03″.77
Dec (top/left)	+54°37′12″.75
Dec (top/right)	+54°07′52″.76
Dec (bottom/right)	+54°06′50″.29
Dec (bottom/left)	+54°36′09″.31

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The Pinwheel Galaxy: M101 in HaLRGB

The Pinwheel Galaxy: M101 in HaLRGB

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The Pinwheel Galaxy: M101 in HaLRGB

The Pinwheel Galaxy: M101 in HaLRGB

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