Equipment and other photo info:
Picture taken on may 7th, 2007.
Skywatcher ED80 @ f/7.5, Canon EOS 300D 16x420sec @ ISO800
Manually guided with Maksutov 90/1250 + Microguide EP 12.5mm
Mount: EQ6 Vis
Processing software: DeepSkyStacker, Photoshop CS2
The Pinwheel Galaxy M101 is revealed as one of the most prominent Grand Design spirals in the sky. While quite symmetric visually and in very short exposures which show only the central region, it is of remarkable unsymmetry, its core being considerably displaced from the center of the disk. Halton Arp has included M101 as No. 26 in his Catalogue of Peculiar Galaxies as a “Spiral with One Heavy Arm”.
More information about this object at: http://www.seds.org/messier/m/m101.html