M81 and M82 Bode's and the Cigar Galaxies (Jason Coon)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 3031 · NGC 3034

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M81 and M82 Bode's and the Cigar Galaxies

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M81 and M82 Bode's and the Cigar Galaxies

This was a "happy accident". I collected data on two nights, and used a broadband light pollution filter for the first night, but on the second night forgot that I still had a dual-band narrowband filter in. As it turns out, the narrowband filter brought out a lot of color, while I used the broadband filter data as a sort of luminance channel. I combined the RGB using:

NBZ Filter Red channel assigned to Red
NBZ Filter Green channel assigned to Green
LPS-D3 Filter Green channel assigned to Blue

If you consider than in an RGGB Bayer matrix Red is only 25% of the light, while Green is 50% of the light, combining the channels this way gives me 125% of the light of a single frame and I benefit from the stronger red from the NBZ.

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B

Description: Reprocessed with SPCC and BlurXTerminator in PixInSight

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Status	Advanced success
Started	...
Astrometry.net job	6840300
PixInsight job	U14XMMW4DMHBIH68BW92OCC62AMDT1VM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h55m35s.77
RA (top/left)	09h56m13s.72
RA (top/right)	09h47m03s.61
RA (bottom/right)	09h55m00s.96
RA (bottom/left)	10h04m27s.18

Dec (center)	+69°17′21″.0
Dec (top/left)	+70°09′19″.9
Dec (top/right)	+68°52′16″.2
Dec (bottom/right)	+68°25′17″.5
Dec (bottom/left)	+69°40′46″.1

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M81 and M82 Bode's and the Cigar Galaxies

M81 and M82 Bode's and the Cigar Galaxies

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Image Index:

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M81 and M82 Bode's and the Cigar Galaxies

M81 and M82 Bode's and the Cigar Galaxies

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Sky plot

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