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Metrology of IXO Mirror Segments

机译:IXO镜段的计量

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摘要

For future x-ray astrophysics mission that demands optics with large throughput and excellent angular resolution, many telescope concepts build around assembling thin mirror segments in a Wolter I geometry, such as that originally proposed for the International X-ray Observatory. The arc-second resolution requirement posts unique challenges not just for fabrication, mounting but also for metrology of these mirror segments. In this paper, we shall discuss the metrology of these segments using normal incidence metrological method with interferometers and null lenses. We present results of the calibration of the metrology systems we are currently using, discuss their accuracy and address the precision in measuring near-cylindrical mirror segments and the stability of the measurements.
机译:对于未来的X射线天体物理学任务,需要具有高通量和出色的角分辨率的光学器件,许多望远镜的概念都围绕着以Wolter I几何形状组装薄镜面段而构建的,例如最初为国际X射线天文台提出的方案。弧秒分辨率的要求不仅对这些镜段的制造,安装和计量都提出了独特的挑战。在本文中,我们将使用具有干涉仪和零位透镜的法向入射计量方法来讨论这些段的计量。我们介绍了当前正在使用的计量系统的校准结果,讨论了它们的准确性,并探讨了测量近圆柱镜面段的精度以及测量的稳定性。

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