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Contains:  Cigar Galaxy, Cigar galaxy, M 82, M82, NGC 3034
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M82 (Pure, Deep and Final)

Technical card


Astrometry.net job: 3486251

RA center: 9h 55' 49"

DEC center: +69° 42' 21"

Pixel scale: 0.468 arcsec/pixel

Orientation: -178.569 degrees

Field radius: 0.264 degrees


Resolution: 2763x2976

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

Description

M82 (Pure, Deep and Final)

I had an idea for one more M82 version...

PURE because I use a Lighten blend of Ha over RGB. I believe this preserves the RGB much more than a screen blend.

DEEP because I use 20 hours of Ha in a 21.3 SQM sky.

FINAL because I promise this is the last version – at least for 2020. (-:

The layering technique used here is...

Ha(Screen)L - Ha(Lighten)RGB.

Here's all the previous versions for quick reference...

M82 5 hours
M82 13.8 hours
M82 43 hours with Adam Block 32" Ha in moonlit sky
M82 35 hours with KG 24" Ha in 21.3 SQM sky

Comments

Author

KuriousGeorge
KuriousGeorge
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Sky plot

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Histogram

M82 (Pure, Deep and Final), 



    
        

            KuriousGeorge