Device for automatic correcting telescope astigmatic aberration using telescope second lens

An automatic calibration and telescope technology, applied in optics, instruments, optical components, etc., to achieve the effect of improving the level of integration, high speed and high performance

Inactive Publication Date: 2007-06-27
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0027] The technology of the present invention solves the problem: overcomes the deficiencies of the existing technologies for compensating the static and quasi-static aberrations of the reflective telescope system, and provides a method for automatically correcting the telescope aberration without measuring various static and quasi-static aberrations of the reflective telescope system With this device

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  • Device for automatic correcting telescope astigmatic aberration using telescope second lens
  • Device for automatic correcting telescope astigmatic aberration using telescope second lens
  • Device for automatic correcting telescope astigmatic aberration using telescope second lens

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Embodiment Construction

[0052] As shown in Figure 1, the light from the object to be observed is received by the primary mirror 2 of the reflective telescope system 11, and a piezoelectric ceramic deformable mirror is used as the secondary mirror 1 of the reflective telescope system 11 to gather the light on the reflective telescope system 11. Before the focal point of the main mirror 2; then the light passes through a circular hole of the main mirror 2 and is focused behind the main mirror 2, and then becomes parallel or nearly parallel light again by the eyepiece 3 of the reflecting telescope system 11, and then the light is passed through the beam splitter 4 Divided into two beams, one beam is imaged on the monitor 10 for observation; one beam is incident on the focusing lens 6 after being attenuated by the variable density attenuation disk 5, focused by the lens 6 and incident on the CCD camera placed on the focal plane of the lens 6 7. A soft aperture is set on the target surface of the CCD camer...

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Abstract

The device is mainly composed of reflecting telescope system, beam splitter, variable density attenuation disc, high voltage amplifier, CCD camera, data acquisition system, industrial control computer, and software control system based on genetic algorithm. Using secondary mirror of the reflecting telescope being as wave front phase corrector, the invention can adjust alignment between primary mirror and secondary mirror of the reflecting telescope automatically under condition of not introducing additional part of aberrational correction. The invention can corrects static and quasi-static aberration of the reflecting telescope as well as aberration brought by each optical part self in selfadaption. Advantage are: compact structure, simple control, and easy of implementation. The invention reduces system error of reflecting telescope imaging greatly, raises imaging capability of the telescope.

Description

technical field [0001] The invention relates to an adaptive optics device, in particular to a genetic algorithm-based adaptive optics device for correcting telescope aberrations, automatically aligning the telescope system, and improving the imaging capability of the telescope system. Background technique [0002] As one of the most important inventions in astronomy, the telescope has a history of nearly 400 years since it came out in 1609. During this period, the development of the telescope has experienced a major leap. Telescopes can be classified into three types according to the type of objective lens: namely, refracting telescopes, reflecting telescopes, and catadioptric telescopes. But the most used in astronomy is the reflecting telescope, especially the Cassegrain reflecting telescope. Reflecting telescopes use a piece of metal-plated (usually aluminum) concave glass as the primary mirror to receive and focus light. Since the focus is in front of the mirror, a hype...

Claims

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Application Information

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IPC IPC(8): G02B26/06G02B27/00G06N3/12
Inventor 杨平许冰杨伟胡诗杰陈善球姜文汉
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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