Howell B J
Appl Opt. 1969 Mar 1;8(3):685-95. doi: 10.1364/AO.8.000685.
A four-lens corrector system to remove residual aberrations in a Ritchey-Chrétien telescope was selected as the means of studying the relative effectiveness of two design methods: a ray deviation error function and third order aberration theory. At several stages in the design, very significant improvements were made by switching from ray deviation results to aberration theory and then back to ray deviation design. The goal, a 300-cm focal length, f/10 diffraction-limited 1.2 degrees flat field telescope for white light, was achieved. Lens data and system performance, including computed spot diagrams, are given for eight versions.
一个用于消除 Ritchey-Chrétien 望远镜残余像差的四透镜校正系统被选作研究两种设计方法相对有效性的手段：光线偏折误差函数和三阶像差理论。在设计的几个阶段，通过从光线偏折结果切换到像差理论，然后再回到光线偏折设计，取得了非常显著的改进。目标是制造出一台焦距为 300 厘米、f/10、用于白光的衍射极限、视场为 1.2 度的平场望远镜，该目标已实现。文中给出了八个版本的透镜数据和系统性能，包括计算得到的光斑图。
