Andromeda Galaxy
Andromeda Galaxy, originally uploaded by DJMcCrady.
The photographer: “The Andromeda Galaxy (M31) is one of the nearest galaxies in our local neighbourhood, and is visible to the naked eye from a dark site. Being so near, it also has a very large apparent size: the width of 6 full moons. The bright blue patch near the top left is designated NGC 206, and is a very large open cluster within M31. It has two satellite galaxies, M32 near the top left, and M110 near the bottom left.
The HII regions have been emphasized by layering an H-alpha exposure into the red and luminance channels.”
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