Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  35 And  ·  Andromeda Galaxy  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224  ·  The star ν And
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M31 (Andromeda Galaxy) in RGB, Derek Spratt
M31 (Andromeda Galaxy) in RGB
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M31 (Andromeda Galaxy) in RGB

Getting plate-solving status, please wait...
M31 (Andromeda Galaxy) in RGB, Derek Spratt
M31 (Andromeda Galaxy) in RGB
Powered byPixInsight

M31 (Andromeda Galaxy) in RGB

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Description

I have 3 versions of M31 on Astrobin: this image in RGB only, RGB+Ha (see https://www.astrobin.com/w4sks8/), and RGB_Ha+O3 (see https://www.astrobin.com/shz7bb/).

The Ha (red) and O3 (Blue) spectrum helps point out where active star forming regions are present ....

Bortle 2 skies - on a perfect night at 5,500' elevation with low humidity and no wind

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Sky plot

Sky plot

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M31 (Andromeda Galaxy) in RGB, Derek Spratt