High-precision primary mirror sphere center directing and tracking device used for telescope alignment

Abstract

The invention discloses a high-precision primary mirror sphere center directing and tracking device used for telescope alignment. The device mainly comprises a photoelectric detector with a point light source, a six-dimensional adjustment stage and a controller. When the device works, the center point light source of the photoelectric detector is arranged to be near the primary mirror sphere center. The six-dimensional adjustment stage is adjusted according to the geometrical optical principle that light emitted by the point light source of the primary mirror sphere center returns to the sphere center so that output error of the photoelectric detector is enabled to be zero and the point light source can direct the sphere center in a high-precision way. In an automatic tracking mode, an error signal is automatically adjusted to be zero by the controller and an adjustment frame; and in a manual tracking mode, the error signal is manually adjusted to be zero. The point light source emitting light actively is adopted, the characteristic of great return light spot morphology is utilized, and the focus light spot is detected by adopting the high-precision photoelectric detector so that the position of the return light spot can be detected in the high-precision way; meanwhile, high-precision real-time directing and tracking of the sphere center are completed by utilizing the automatic control technology and the six-dimensional electric adjustment stage so that the telescope alignment process is optimized.

Description

technical field [0001] The invention belongs to the technical field of manufacturing optical measuring telescopes, and in particular relates to a high-precision primary mirror sphere center indication and tracking device for telescope assembly and adjustment. Background technique [0002] During the installation and adjustment of the telescope, the optical axis of the primary mirror needs to be adjusted to the specified position. The optical axis is determined by two points, one is the vertex of the primary mirror surface, and the other is the center of the sphere. The vertex of the primary mirror surface can be placed in the primary mirror hole and adjust the crosshair to coincide with the vertex of the primary mirror surface as much as possible, see the attached figure 2 ;The traditional method of indicating the center of the ball is to place a crosshair at the center of the ball, and use the human eye to observe whether the crosshair coincides with the returned image behi...

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to propose a high-precision main mirror sphere center indicator and tracking device for telescope assembly and adjustment in view of the problems of low accuracy and long adjustment process of the existing sphere center indicating device

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