M 101 in Ursa Major

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M101, the Pinwheel Galaxy, is a large spiral type galaxy which lies approximately 24 million light years from Earth. At an approximate diameter of 170,00 light years, it is one of the largest visible galaxies in the sky.


180 minutes of Luminance, 1x1 Binning.

120 minutes each of Red, Green and Blue, 1x1 Binning.

Five minute sub-frames.

06/24/12-06/27/12


Image acquired using SBIG St-10XME camera with Astrodon filter set through Astro-Tech 10” telescope.