Technical details: Location / Date: Outside of Kopparberg, Västmanland, Sweden / 2017-April Optics: Orion Optics UK AG12 Mount: 10 Micron GM1000 HPS (Unguided) Camera: Canon EOS 100D (Modded with Baader ACF filter) Exposure: 37 x 5 minutes + 66 x 3 minutes at ISO 3200 + 21 x 30 sec at ISO 1600 (cumulative exposure time is 6 hours, 33 minutes and 30 seconds) Processing: Pixinsight and Photoshop   Image details: Messier 63 (also known as M63, NGC 5055, or the Sunflower Galaxy) is a spiral galaxy 27 million light-years away in the constellation Canes Venatici consisting of a central disc surrounded by many short spiral arm segments. M63 is part of the M51 Group, a group of galaxies that also includes M51 (the 'Whirlpool Galaxy'). M63 is an active galaxy with a LINER nucleus. M63 was discovered by Pierre Méchain on June 14, 1779. The galaxy was then listed by Charles Messier as object 63 in the Messier Catalogue. In the mid-19th century, Lord Rosse identified spiral structures within the galaxy, making this one of the first galaxies in which such structure was identified.[4] In 1971, a supernova with a magnitude of 11.8 appeared in one of the arms of M63. (Information from Wikipedia)