Guide star-based large-scale telescope field assembly and adjustment detection device and method

Abstract

The invention relates to a guide star-based large-scale telescope field assembly and adjustment detection device and a guide star-based large-scale telescope field assembly and adjustment detection method and belongs to the optical assembly and adjustment detection technical field. The objective of the invention is to solve the problem of poor reliability and the incapability of a fixed star target to satisfy a light source stability requirement of optical system assembly and adjustment detection. The guide star-based large-scale telescope field assembly and adjustment detection device of the invention comprises a high-performance laser, a laser beam expanding telescope, a precision pointing mirror and a wavefront sensor; the wavefront sensor is located behind the focus of a detected large-scale telescope; a laser beam emitted by the high-performance laser is subjected to beam expansion of the laser beam expanding telescope; the expanded laser beam is reflected to a sodium atom layer through the precision pointing mirror, wherein the sodium atom layer is 100km above the ground; the laser beam excites sodium atoms to resonate, so that a sodium laser guide star can be obtained; the sodium laser guide star enters into the center of the detector view field of the wavefront sensor; the optical axis of the laser reflected by the precision pointing mirror is parallel to the visual axis of the detected large-scale telescope; and the star point of the sodium laser guide star enters view field of the detected large-scale telescope system.

Description

technical field [0001] The invention belongs to the technical field of optical assembly and adjustment detection, and in particular relates to an on-site assembly and adjustment detection device and method for a large telescope based on a guide star. Background technique [0002] During the development of large-scale optical telescopes, the adjustment and inspection of the optical system and the evaluation of system performance in the later stage are extremely important tasks, which directly affect the performance of the telescope. At present, the optical adjustment and inspection of small telescopes are mostly completed indoors, and generally adopt methods such as interferometry, knife-edge shadow method, and star point method. However, with the gradual increase of the optical aperture, especially reaching more than 2m, the telescope has a large aperture and a long focal length, and the traditional indoor adjustment detection method is no longer applicable. [0003] At hom...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a device and method for on-site assembly and adjustment detection of large telescopes based on guide stars, so as to solve the problems of poor reliability in the prior art and the inability of star targets to meet the requirements of light source stability for optical system assembly and adjustment detection.

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