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M51 06062011 · M51, the Whirlpool galaxy in the constellation Ursa Major. This image was taken on June 06, 2011 six days after French amateur astronomer Amédée Riou's discovery of SN2011dh, a Type II supernova in one of the arms of this iconic galaxy. 15x300sec fits exposures captured and combined in Nebulosity v2.4.0 software. Finishing touches done in PhotoShop.
Telescope: Orion 8" 1000mm f4.9 Newtonian reflector.
Mount: Orion Atlas EQ-G
Guide Scope: Meade 800mm f10 reduced to f5 with Atik x.5 focal length reducer (ADM rings).
Imaging Camera: Mead DSI Color 16bit camera with Peltier cooler modification.
Guide Camera: Meade DSI Pro monochrome 16bit camera.
Imaging camera in prime focus.
Filtration used: Baader UV/IR Cut filter ·