M101
The Pinwheel Galaxy is a face-on spiral galaxy about 27 million light-years away in the constellation Ursa Major. With a diameter of 170,000 light-years it is nearly twice the size of the Milky Way. On photographs M101 can be seen to be asymmetrical on one side. It is thought that in the recent past (speaking in galactic terms) M101 underwent a near collision with another galaxy and the associated gravitational tidal forces caused the asymmetry.
Equipment: Exposure details: Location:
Telescope: TEC180FL
Mount: Astro Physics Mach1GTO
Camera: SBIG ST-10XME
Filters: Astrodon LRGB
Luminance: 6x10min
Red: 3x10min
Green: 3x10min
Blue: 3x10min
Chalkida, Euvoia, Greece
N 38o30'02'' - E 23o33'26''
Elevation:0m
23 April 2008
Image details:
Acquisition: MaxImDL Reduction/stacking: MaxImDL RGB weights: G2V Star
RGB combine: MaxImDL LRGB creation: Photoshop CS3
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