Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  HD85458  ·  M 81  ·  NGC 3031
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M81 LRGB, pfile
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M81 LRGB

Equipment

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Acquisition details

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Description

LRGB M81. AT10RC with STT-8300M and astrodon filters. 3h44m of luminance and 64 minutes each of R, G, B, bin 2x2. also 130 minutes of Ha, bin 2x2. Ha is blended into the red channel 50/50 only where the Ha signal was strong, and blended into the B channel at 20/80 to simulate the Hb line.

Comments

Sky plot

Sky plot

Histogram

M81 LRGB, pfile

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Cloudy Nights