M106 Galaxy in Canis Venatici (Mark Wetzel)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 106 · NGC 4248 · NGC 4258

M106 Galaxy in Canis Venatici, Mark Wetzel

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M106 Galaxy in Canis Venatici

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M106 Galaxy in Canis Venatici

Walton, OR

March 11-12 and May 12, 2021

I imaged the M106 Galaxy in the constellation Canes Venatici (the hunting dogs). I captured Luminance, Red, Green and Blue filter subframes over three nights. Having neglected to check collimation, I had to discard most of the first night of imaging data.

M106 is a spiral galaxy, type Sbc, with a tightly wound structure. This galaxy is about 25 Mly from Earth, and it has a diameter of almost 123,000 kly. M106 may be a part of the Ursa Major cloud, a loose “agglomeration” of galaxies. The barred spiral galaxy NGC 4248 is located in the lower right part of the image. It is about 36 Mly away. To the left of M106 is the irregular galaxy, UGC 7365 (PGC 39615). It has a magnitude of +16 and is about 24 Mly distant. There are also several other very faint galaxies in the image, including PGC 166129 and PGC 4002249 (SkySafari 6 Pro).

Like my M63 project, color processing in PixInsight was a challenge for this galaxy. Up to this point, I have used local normalization or adaptive normalization with good success. However, the red, green, and blue channel images were altered significantly when adaptive normalization was used in the Integration tool. I could not get the colors correct and there were color artifacts in the combined RGB image. When I integrated the color stacks without normalization, the color calibration produced a better result. However, I could not get the saturation where I wanted it, especially near the core.

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Description: Reprocessed with new tools in PixInsight

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Status	Basic success
Started	...
Astrometry.net job	7217720
PixInsight job	n/a
PixInsight queue size	n/a
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M106 Galaxy in Canis Venatici

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M106 Galaxy in Canis Venatici

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