Since 2004, the Burst Alert Telescope (BAT) aboard Swift has been mapping high-energy X-ray sources all around the sky.
自2004年以来，突发警示望远镜（BAT）的映射乘坐斯威夫特已经在空中的高能量X射线源的。
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Where Swift's BAT provided a wide-angle view, the X-ray telescope aboard the Chandra X-ray Observatory acted like a zoom lens and resolved details a hundred times smaller.