Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
Bode's and Cigar Galaxies Reloaded: adding H-a monochrome to old colour DSLR data, Michele Vonci
Bode's and Cigar Galaxies Reloaded: adding H-a monochrome to old colour DSLR data
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Bode's and Cigar Galaxies Reloaded: adding H-a monochrome to old colour DSLR data

Bode's and Cigar Galaxies Reloaded: adding H-a monochrome to old colour DSLR data, Michele Vonci
Bode's and Cigar Galaxies Reloaded: adding H-a monochrome to old colour DSLR data
Powered byPixInsight

Bode's and Cigar Galaxies Reloaded: adding H-a monochrome to old colour DSLR data

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Description

It's almost full moon so last night I decided to take some H-a data for the Bode's and Cigar Galaxies (M81 & M82). I took about 3 hours (34x300s) data and initially I thought I'd publish just the monochrome data. Then I remembered that I have some old RGB data collected with a Canon 600D DSLR (https://www.astrobin.com/ahu0wg). I'd never put together data with different FOV, so I had to some searching and eventually found out how to merge the H-a data with the RGB data using RegiStar, that did the job quite well, stretching and re-scaling the two sets of data in order to match them.

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Sky plot

Sky plot

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Bode's and Cigar Galaxies Reloaded: adding H-a monochrome to old colour DSLR data, Michele Vonci

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Galaxies