测试配置说明： A telescope tested at the Cassegrain focus using external parallel light. The aberrations of the SH system itself are removed by taking a calibration frame, with a calibration source placed at the focus of Puntino. The incident light illuminating the system should be aberration free. In the case of an astronomical telescope, a natural star is used.
It is not necessary to use parallel light for the test. The measured aberrations will then no longer refer to those for parallel light, but to one particular optical configuration that is used for the test.
牛顿焦点 Newtonian focus 测试
测试配置说明 A telescope tested at the Newtonian focus using parallel light. The aberrations of the SH system itself are removed by taking a calibration frame, with a calibration source placed at the focus of Puntino. The incident light illuminating the system should be aberration free. In the case of an astronomical telescope, a natural star is used.
It is not necessary to use parallel light for the test. The measured aberrations will then no longer refer to those for parallel light, but to one particular optical configuration that is used for the test.
通过使用Zygo GPI xp HR干涉仪和Spot-Optics公司的Optino 波前测试系统对一个硬盘上小面积(7mm)区域，进行测试对比。
