A. BAKER / EUROPEAN SPACE AGENCY / SCIENCE PHOTO LIBRARY A. BAKER / EUROPEAN SPACE AGENCY / SCIENCE PHOTO LIBRARY
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Flyeye telescope. Illustration of the automated flyeye telescope being developed by the European Space Agency (ESA) to locate asteroids and comets that might impact the Earth (near-Earth objects, NEOs). The telescopes would be used for nightly sky surveys as part of a network that would completely scan the sky. The telescope splits the image into 16 smaller subimages (similar to how a fly's eye works). Such telescopes provide a very large field of view, about 13 times the diameter of the Moon as seen from the Earth. A single 1-metre mirror passes light to a beam splitter with 16 facets, and then to 16 separate cameras. The telescopes are being constructed by a multinational consortium, and are expected to begin operating around 2018. Image published in 2017.
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