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Left: amateur image, right: Hubble image of Messier 46. The left image shows a field of stars on a black background. A small area of the image shows a blue-green cloud ring with a bright-white star at its center. The right, Hubble, image shows a portion of a round cloud on the right side of the image. The cloud begins with a ring of red-orange, moves to a lighter orange to yellow-orange color. The center of circle is light blue with a fine ring of green. A bright-white star encircled with red rests at 9 o'clock , while smaller stars are in the center of the cloud and dotting the black background.

Messier 46: Amateur Image vs. Hubble Image

This image features the planetary nebula NGC 2438, which is located in front of the open star cluster M46 (also known as NGC 2437). Most of the stars in this image are part of M46 and are roughly 5,400 light-years away, 2,400 light years behind the nebula. 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. Knoll (NASA Goddard), and S. Öttl (Leopold Franzens Universität Innsbruck), et. al.; Processing: Gladys Kober (NASA/Catholic University of America)
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Image CreditAmateur Image: Photographed by and used with permission of K. Hartnett; Hubble Image: NASA, ESA, K. Knoll (NASA Goddard), and S. Öttl (Leopold Franzens Universität Innsbruck), et. al.; Processing: Gladys Kober (NASA/Catholic University of America)
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