Bode's & Cigar Galaxies (M81, M82) - LRGB+Ha (dswtan)

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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Bode's & Cigar Galaxies (M81, M82) - LRGB+Ha

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Bode's & Cigar Galaxies (M81, M82) - LRGB+Ha

I'm finding RGB processing much more pernickety than NB, but getting there. This may be overcooked for some, but the colourful "baubles" of M81 and M82 are Christmas-appropriate. :-)

Previous experience meant I knew I wanted a boost in Ha especially for M82, so went all the way and captured a bunch of that at the same time.

Basic recipes:

https://www.lightvortexastronomy.com/tutorial-combining-monochrome-r-g-and-b-images-into-a-colour-rgb-image-and-applying-luminance.html

https://www.lightvortexastronomy.com/tutorial-combining-lrgb-with-narrowband.html

Used EZ HDR on Luminance to help resolve M81 core, as well as EZ Decon and EZ Denoise on all channels.

Seemed to be a lot of walking noise in Ha and a little in L, despite dithering. Seemed to come out ok though the combination steps were a lot messier than the underlying channels implied apart from that.

3 nights - approx. totals after Blink culling:

RGB - 1hr each

L - 3hr

Ha - 3.5hr

https://en.wikipedia.org/wiki/M81_Group

Cloudy Nights

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Status	Advanced success
Started	...
Astrometry.net job	4115094
PixInsight job	OF0FC40SR10IAZHDRKJDJNY5FIZMMT5B
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	09h55m35s.55
RA (top/left)	10h00m24s.68
RA (top/right)	10h01m40s.74
RA (bottom/right)	09h50m28s.15
RA (bottom/left)	09h49m51s.32

Dec (center)	+69°20′37″.10
Dec (top/left)	+68°40′16″.8
Dec (top/right)	+69°56′37″.3
Dec (bottom/right)	+70°00′27″.3
Dec (bottom/left)	+68°43′52″.2

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Bode's & Cigar Galaxies (M81, M82) - LRGB+Ha

Bode's & Cigar Galaxies (M81, M82) - LRGB+Ha

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Bode's & Cigar Galaxies (M81, M82) - LRGB+Ha

Bode's & Cigar Galaxies (M81, M82) - LRGB+Ha

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