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Zooming in on Kepler’s Field of View

Zooming in on Kepler's Field of View
Zooming in on Kepler's Field of View

This image from NASA’s Kepler mission shows the telescope’s full field of view – an expansive star-rich patch of sky in the constellations Cygnus and Lyra stretching across 100 square degrees, or the equivalent of two side-by-side dips of the Big Dipper.
A cluster of stars, called NGC 6791, and a star with a known planet, called TrES-2, are outlined. The cluster is eight billion years old, and located 13,000 light-years from Earth. It is called an open cluster because its stars are loosely bound and have started to spread out. TrES-2 is a hot Jupiter-like planet known to cross in front of, or transit, its star every 2.5 days. Kepler will hunt for transiting planets that are as small as Earth.
Image credit: NASA/Ames/JPL-CaltechFull resolution (1.6MB)