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M82 is a Starburst type galaxy in the Big Dipper, 11.5M l.y. far from Earth, with a strong star formation rate due to the gravitational interaction with M81, distant only 300'000 l.y. M81 is an SA(s)b type galaxy, with a diameter of 72'000 l.y. at a distance of 12M l.y. from us. Both are part of M81 Group, which counts 34 members in UMa. In the field it's also weakly visible the IFN, a molecular cloud belonging to our Milky Way.
SW Quattro 8S 200mm f/4 with Baader MPCC Mark III corrector