The large future X-ray astrophysics space missions (such as the ESA XEUS) require very light-weight but large and precise X-ray mirror shells. Clearly, the developments of innovative techniques and approaches are necessary. We discuss the possible alternative techniques with focus on the technologies and experience available in the Czech Republic. They include light ceramics replication by plasma spraying as well as by CVD and PVD technologies, SiC, thin glass technology, improved electroforming, composites, as well as glossy metals and glossy carbon.
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