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M94 is a galaxy in Canes Venatici with an interesting structure. Surrounding the small, typical-looking galaxy at the center are not one but two outer "rings". Photographically this is a challenging object because it has four levels of brightness: the very bright innermost core, the rest of the inner part, the brownish first ring, and the faint outer ring. In order to represent these without saturating any parts, three separate stacks of subexposures were combined using HDR techniques: one stack for the core, one for the rest of the galaxy and the first ring, and one for just the outer ring.
The pair of small galaxies near each other in the lower left of the picture are collectively known as IC 3854.