Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  HD85161  ·  HD85458  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
M81 Bode's Galaxy and M82 Cigar Galaxy, fermion
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M81 Bode's Galaxy and M82 Cigar Galaxy

M81 Bode's Galaxy and M82 Cigar Galaxy, fermion
Powered byPixInsight

M81 Bode's Galaxy and M82 Cigar Galaxy

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Description

First attempt of the pair of galaxies using the TSA-120N. Didn't have the chance to capture the luminance data. Taking and processing RGB data turned out to be more tricker than I expected. Tried my best to smooth out the background in PixInsight's dynamic background extraction, but there are still left over gradients. Worst of all, these residual gradients are filter-dependent, making it hard to process the combined RGB data. Also my blue filter master flat seems to over-correct the image. Many lessons learned.

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M81 Bode's Galaxy and M82 Cigar Galaxy, fermion