Moran E C, Harvey J E
Appl Opt. 1988 Apr 15;27(8):1486-91. doi: 10.1364/AO.27.001486.
In Wolter type I grazing incidence telescopes, ghost images result whenever unreflected xrays or singly reflected x rays pass through the telescope and impinge on the focal plane. These ghost images degrade imagequality and can bo eliminated by appropriately positioned stops and baffles. However, conflicting demandsbe placed on an aperture design by requirements for field of view, vignetting, and ghost image control. These problems are particularly severe for high energy x-ray telescopes which require very small grazing angles of incidence. We have developed and used analytical and numerical tools to perform parametric analyses of ghost image behavior and to obtain an aperture plate design capability that can, be utilized to satisfy specific ghost image requirements.
在沃尔特I型掠入射望远镜中，每当未反射的X射线或单次反射的X射线穿过望远镜并撞击焦平面时，就会产生重影。这些重影会降低图像质量，并且可以通过适当放置的光阑和遮光板来消除。然而，视场、渐晕和重影控制的要求对孔径设计提出了相互冲突的要求。对于需要非常小的掠入射角的高能X射线望远镜，这些问题尤为严重。我们已经开发并使用了分析和数值工具来对重影行为进行参数分析，并获得一种孔径板设计能力，可用于满足特定的重影要求。
