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Left: amateur image, right: Hubble image of Messier 33. The amateur image shows a nearly face on spiral galaxy with its bright-white core and spiral arms. The right image reveals more detail, including dust lanes. The right image also reveals blue, red, yellow, and orange regions of gas, young stars, and star formation.

Messier 33: Amateur Image vs. Hubble Image

Messier 33 (M33) is a spiral galaxy located about three million light-years away in the constellation Triangulum. At half the size of our Milky Way, M33 is the third-largest galaxy in our local group of galaxies. 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, and M. Durbin, J. Dalcanton and B. F. Williams (University of Washington)
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