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M 102

Messier 102 (also known as M102) is a galaxy listed in the Messier Catalogue that has not been identified unambiguously. Its original discoverer Pierre Méchain later said that it was a duplicate observation of Messier 101, but there are historical and observational reasons to believe that it could be NGC 5866, although other galaxies have been suggested as possible identities.

L = 36 * 600 sec. bin1, RGB = 10 * 900 sec. bin2, HaOIII = 10*1800 sec. bin2, in the each filters.

Total exposition - 23.5 hours

Pixinsight 1.8, Photoshop.

M 102

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