Orion and Horsehead Nebulae in HaRGB (Luc Germain)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Flame Nebula · Great Orion Nebula · IC 430 · IC 431 · IC 432 · IC 434 · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1981 · NGC 1982 · NGC 2023 · NGC 2024 · Orion B · Orion Nebula · Part of the constellation Orion (Ori) · The star 31Ori · The star 42Ori · The star 49Ori · The star Alnilam (εOri) · The star Alnitak (ζOri) · The star θ1Ori · The star θ2Ori · The star ιOri · The star σOri · And 2 more.

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Orion and Horsehead Nebulae in HaRGB

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Orion and Horsehead Nebulae in HaRGB

This is a wide field of view of the center of the Orion constellation, showing both the Orion Nebula (M42) and the Horsehead nebula (IC434/B33). A Ha filter was mainly used to show the large extent of hydrogen clouds surrounding these two iconic nebulae. I also took some RGB data to put some color on the Ha signal. I hesitated in using the color data as it was not very good from my Bortle 7 sky, but with quite a lot of processing, I think it turned out OK. I added the monochrome Ha only photo in another version. Which one do you prefer?

For this photo, I used a Canon 100-400L IS II zoom lens wide open, at around 150mm of focal length (145mm as reported by plate solving in APT). Very satisfied by the quality of this zoom lens for astrophotography! The only draw back is not having autofocus capability...

Thanks for looking!

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Description: Ha only version

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ZWO ASI1600MM/QHY163M
Astro-Québec
Imaged with APT

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Status	Basic success
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Astrometry.net job	5554092
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Orion and Horsehead Nebulae in HaRGB

Orion and Horsehead Nebulae in HaRGB

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Orion and Horsehead Nebulae in HaRGB

Orion and Horsehead Nebulae in HaRGB

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