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Left: amateur image, right: Hubble image of Messier 101. Both images reveal a pinwheel, spiral galaxy, but the Hubble image is much brighter, larger, and reveals much more detail. The Hubble image shows dust lanes in the galaxy's spiral arms along with star clusters and gas clouds.

Messier 101: Amateur Image vs. Hubble Image

Messier 101 (M101) is a classic, face-on, pinwheel, spiral galaxy located 25 million light-years away in the constellation Ursa Major. The left image was taken with an 8-inch Schmidt-Cassegrain telescope using a 0.63x focal reducer and a DSLR Camera. The right image was taken by NASA’s Hubble Space Telescope.

Image Credit: Amateur Image: Photographed by and used with permission of K. Hartnett; Hubble Image: NASA, ESA, K. Kuntz (JHU), F. Bresolin (University of Hawaii), J. Trauger (Jet Propulsion Lab), J. Mould (NOAO), Y.-H. Chu (University of Illinois, Urbana) and STScI; CFHT Image: Canada-France-Hawaii Telescope/J.-C. Cuillandre/Coelum; NOAO Image: G. Jacoby, B. Bohannan, M. Hanna/NOAO/AURA/NSF
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Image CreditAmateur Image: Photographed by and used with permission of K. Hartnett; Hubble Image: NASA, ESA, K. Kuntz (JHU), F. Bresolin (University of Hawaii), J. Trauger (Jet Propulsion Lab), J. Mould (NOAO), Y.-H. Chu (University of Illinois, Urbana) and STScI; CFHT Image: Canada-France-Hawaii Telescope/J.-C. Cuillandre/Coelum; NOAO Image: G. Jacoby, B. Bohannan, M. Hanna/NOAO/AURA/NSF
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