M51
Located between the constellations of Ursa Major and Canes Venatici lies M51, more commonly referred to as the Whirlpool Galaxy. We are actually looking at two galaxies in this image. The bright yellow area on top is a companion galaxy - NGC 5195 that is actually gliding behind M51. Its strong interaction with M51 creates star making regions evident by the colorful magenta regions between the two galaxies.
OTA: Vixen VC200L
Camera: Atik 460ex w/EFW2 filter wheel
Filters: Astrodon LRGB
Mount: CGEM DX
Exposure: L:R:G:B 70:60:60:60 (m) rgb bin 2x2
Data obtained: March/May 2015