Wetherell W B, Rimmer M P
Appl Opt. 1972 Dec 1;11(12):2817-32. doi: 10.1364/AO.11.002817.
The properties of two-conic reflecting aplanats are analyzed and discussed on the basis of third order aberration theory. Techniques for designing infinite conjugate two mirror aplanats and computing their image properties are developed. The secondary mirror alignment characteristics of Ritchey-Chrétien and aplanatic Gregorian telescopes are examined and neutral point locations defined. Design configurations corrected for a third Seidel aberration (astigmatism, image curvature, or distortion) are identified and their properties discussed. The properties of Ritchey-Chrétien and aplanatic Gregorian telescopes are compared.
基于三阶像差理论，对双圆锥反射消球差透镜的特性进行了分析和讨论。开发了用于设计无限共轭双镜消球差透镜及其像特性计算的技术。研究了 Ritchey-Chrétien 望远镜和消球差格里高利望远镜的副镜对准特性，并定义了中性点位置。确定了针对第三种赛德尔像差（像散、像面弯曲或畸变）校正的设计结构，并讨论了它们的特性。比较了 Ritchey-Chrétien 望远镜和消球差格里高利望远镜的特性。
