Wavefront sensing method, device and system for large-view-field active optical telescope

Abstract

The embodiment of the invention discloses a wavefront sensing method, device, device and system for a large-view-field active optical telescope and a computer readable storage medium. The method comprises the following steps: calculating low-order wavefront information of each star point in a focal plane out-of-focus image of a telescope by utilizing a DOUNT rapid algorithm, wherein the out-of-focus image of the focal plane is acquired by an image sensor in a long exposure and initial out-of-focus amount state in the moving process of the edge of the field of view of the telescope; if the low-order wavefront aberration of each star point is discontinuous, generating a defocusing amount adjustment instruction according to a preset adjustment amplitude; when the detection telescope automatically increases the defocusing amount on the basis of the initial defocusing amount according to the adjustment amplitude, sending an instruction of re-collecting the out-of-focus image of the focal plane; and finally, obtaining wavefront information of the telescope according to the continuous focal plane out-of-focus image of the low-order wavefront aberration of each star point. According to the invention, the detection precision of telescope wavefront sensing can be effectively improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wavefront sensing and detection, and in particular to a wavefront sensing method, device, equipment, system and computer-readable storage medium for a large field of view active optical telescope. Background technique [0002] With the rapid development of large aperture and large field of view telescopes and aerospace technology, in order to obtain higher sky survey efficiency and light collection ability, the aperture and field of view of the telescope are constantly expanding. Active optics, as the key technology of large aperture and large field of view telescopes, has been widely used. In order to further develop the detection capability of the large-aperture and large-field telescope, the independent and real-time surface correction and attitude control of each main component in the telescope through active optics can not only reduce the requirements for optical processing and ...

AI Technical Summary

Problems solved by technology

[0004] Related technologies can use pupil surface wavefront sensing technology when detecting wavefront sensing of large-aperture telescopes. This technology uses Hartmann sensors and interferometers to detect wavefront sensing. Precision and accuracy are critical, and the cost of using a larger-caliber interferometer to increase measurement accuracy will be difficult to control

That is to say, the accuracy and precision of the wavefront sensing of the telescope using the pupil surface wavefront sensing technology is limited by the physical hardware parameters of the interferometer, which is not conducive to improving the detection accuracy of the wavefront sensing

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