M31 The Andromeda Galaxy

The Andromeda Galaxy is a spiral galaxy approximately 2.5 million light-years from Earth in the Andromeda constellation. The Andromeda Galaxy is the nearest spiral galaxy to our Milky Way galaxy, but not the closest galaxy overall.

M31 The Andromeda Galaxy in HaRGB


M31 The Andromeda Galaxy


November 4 (LRGB) and 5 (HaLRGB) 2013


Telescope: Takahashi Sky 90II with F/4.5 reducer/flattener

Camera: SBIG ST-10XME w/ CFW10 (Astrodon Gen 2 LRGB and 3nm Ha Filters)

Autoguider: Orion Starshoot

Guidescope: Orion 50mm

Mount: Celestron CG-5 Mount

Exposure Info: L: 13 x 5 mins
Ha: 3 x 10 mins
R: 8 x 10 mins
G: 8 x 10 mins
B: 8 x 10 minsTotal Exposure Time: 5 Hours 35 mins


Maxim DL 5.23, Photoshop CS6


This was the 4th time imaging M31.  This was the longest exposure of M31 and I also added a layer of Hydrogen Alpha (Ha) to it

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