Messier 101, The Pinwheel Galaxy

Messier 101, The Pinwheel Galaxy

Located nearly 25 million light years away, Messier 101 is favorite amateur imaging target. It’s big, bright, and beautiful! Most of today was spent fiddling around with trying to bring out the finer details on the fringes here – and learning more CS5 tricks – thanks Tony Hallas ;) ) Be sure to click on the image for the full scale detail…

In May of last year, I imaged M101 through the four-inch Televue NP 101is with super shallow 60 second frames. Given the larger aperture (and image scale) of the AT10RCF as well as using 10x 10 minute exposures, the difference is pretty remarkable!

If you look carefully, you can see some dust speck-induced “black circles”. Normally flats would take care of this problem, except that unfortunately I didn’t take any! What do you think?

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