Sunday, May 4, 2014

M101 - The Pinwheel Galaxy

(click on image for full resolution image)

M101 is a face-on spiral galaxy in Ursa Major in a distance of 21 million light years. Despite being in the Messier catalog, it was actually discovered by Pierre_Mechain in 1781.

This is the first image that I completely processed in Pixinsight (calibration and registration, stacking and post-processing). It's also the first time that I blended Ha data into a galaxy image.