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One of the major fields, which should be explored following Chandra and XMM-Newton is the hard X-ray sky up to several tens of keV with certain imaging capabilities. A new X-ray telescope mission or Non-thermal Energy eXploration Telescope (NeXT) in Japan is the first satellite mission proposed for a hard X-ray telescope using multilayer supermirror. The hybrid X-ray imager will be placed on the focal...
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