Comet Hartley 2

This photo of Comet Hartley 2 (green, right center) was taken by Joe Wheelock near McDonald Observatory on October 8. On this date, the comet appeared to the right of two star clusters called the "Double Cluster" in the constellation Perseus. The red nebulae to the far left are collectively called the Heart and Soul Nebula. The photo was taken using a camera with a 105-mm telephoto lens piggybacked onto a 16-inch Newtonian telescope. Credit: Joe Wheelock/McDonald Observatory

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