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Calibration Method for Adjusting Components of Active Optical Telescope with Large Field of View
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摘要: 为了更好地对大视场主动光学望远镜进行调控。阐明了基于内外部度量系统对望远镜中调节组件进行检测定标的基本原理。对大视场主动光学望远镜定标过程进行了误差分析，并利用桌面实验实现了大视场主动光学望远镜运动部件检测方法的原理贯通。实现了非衍射均匀分光，克服了衍射分光杂散条纹多、分光角小的缺点，分散角高于100°，精度优于15 µm，角度精度优于3″，基于波前传感进行标定的精度优于10 µm，可有效提升大口径大视场望远镜调节元件的检定精度以及望远镜最终的成像质量。Abstract: In order to better regulate the large field of view active optical telescope. Firstly, the basic principle of the calibration of the adjustment components in the telescope based on the internal and external measurement system is expounded. Secondly, error analysis was conducted on the calibration process of a large field of view active optical telescope. Afterwards, the feasibility of the differential field of view curvature sensing method for large field of view active optical telescopes was analyzed and experimentally studied. Finally, the principle of the detection method for moving components of a large field of view active optical telescope was verified through desktop experiments. In the end, the large-scale calibration process achieved non diffractive uniform beam splitting, overcoming the shortcomings of diffraction beam splitting with multiple stray fringes and small beam splitting angle. The accuracy of dispersion angle above 100° is better than 15 microns, and the angle accuracy is better than 3″. The accuracy of calibration based on wavefront sensing is better than 10 microns. This study can effectively improve the imaging quality of large aperture and large field of view telescopes.
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图 1 望远镜调节组件检测定标原理图
Figure 1. Schematic diagram of telescope adjustment component detection and calibration
图 2 基于棱镜的空间机械-光学共基准测量原理图
Figure 2. Schematic diagram of space mechanical optical common reference measurement based on prism
图 3 基于棱镜的空间机械-光学共基准测试图
Figure 3. Space Mechanical Optics Common Reference Test Based on Prism
图 5 基于曲率传感器的大口径大视场波前探测流程图
Figure 5. Flowchart of Large Aperture and Large Field of View Wavefront Detection Based on Curvature Sensors
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