M81 and M82 Galaxies in LHaRGB (Luc Germain)

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

M81 and M82 Galaxies in LHaRGB, Luc Germain

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M81 and M82 Galaxies in LHaRGB

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M81 and M82 Galaxies in LHaRGB

Here are Bode's (M81) and Cigar (M82) Galaxies. The image is an LHaRGB composition. (Actually, the Ha data was partly mixed with the luminance and the red layer). No IFN visible from my Bortle 7 sky, unfortunately.

It seems that the strange spikes around bright stars is due to my ES ED127 not liking very cold weather. The patterns were very apparent at around -20°C, but almost disappeared on another night at around 0°C. Maybe some kind of stress on the lenses caused by the contraction of the metal ring? Hoping to confirm the problem disappears completely in warmer nights this spring. If it's the case maybe there is something I can adjust in the cell to make these patterns go away in colder nights...

Thanks for looking and clear skies!

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Description: Touched up color and contrast a little bit.

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Explore Scientific 127
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M81 and M82 Galaxies in LHaRGB

M81 and M82 Galaxies in LHaRGB

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M81 and M82 Galaxies in LHaRGB

M81 and M82 Galaxies in LHaRGB

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