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Since Chandra is an X-ray telescope, its hardware is very different from the X-ray detectors. Also, the telescope of Chandra is not the same as an optical telescope used on land to view the stars.
Chandra's X-ray TelescopeX-rays do not bounce off of mirrors like optical waves bounce off of a telescope mirror. Instead the X-rays would penetrate the mirror if aimed directly at it. Because of this, the X-ray mirrors are set up so that the X-rays ricochet off of the surface of the mirrors. When they do this, the X-rays look like rocks being skipped on a lake.
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