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Large-field-of-view solar grating spectral imaging device capable of correcting system aberration

A technology of grating spectroscopy and imaging device, which is applied in the field of solar grating spectroscopy application instrument, and can solve the problems of small field of view and the like

Inactive Publication Date: 2019-10-25
SANMING UNIV
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Problems solved by technology

Through the closed-loop correction of the telescope, the influence of atmospheric turbulence can be well compensated, so that a solar image close to the diffraction limit can be obtained on the focal plane of the solar telescope, but its field of view is small

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  • Large-field-of-view solar grating spectral imaging device capable of correcting system aberration
  • Large-field-of-view solar grating spectral imaging device capable of correcting system aberration
  • Large-field-of-view solar grating spectral imaging device capable of correcting system aberration

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implement...

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Abstract

The invention provides a large-field-of-view solar grating spectral imaging device capable of correcting the system aberration. On the premise that the cost and system complexity are not increased obviously, a calibration optical system is introduced into a grating spectrometer system; and a wavefront detector for calibrating the system aberration of a large-field-of-view solar grating spectrometer is introduced at the conjugate position of the focal plane. The calibration optical system is used for calibration aberrations of different fields of view of the grating spectrometer system; and thewavefront detector is used for detecting the aberrations of different fields of view of the system. On the basis of a deconvolution algorithm, the influence on the spectral imaging quality by the system aberration is eliminated. Therefore, the device has the important significance in improving the imaging quality of the solar grating spectrometer system.

Description

technical field [0001] The invention relates to the field of solar grating spectral imaging application instruments, in particular to a large-field solar grating spectral imaging device capable of correcting system aberrations. Background technique [0002] The solar imaging grating spectrometer is an important instrument for studying the fine structure and physical characteristics of the solar atmosphere, and has been widely used in the observation of the solar atmosphere (Huang Youran, Xu Aoao, Qin Zhihai, etc. Measured Astrophysics [M]. Beijing : Beijing Science Press, 1987.). However, its imaging performance is affected by the dynamic wavefront aberration of atmospheric turbulence and the static wavefront aberration of the system (Changhui Rao et al. "Performance of the 37-element solar adaptive optics for the 26cm solar fine structure telescope at Yunnan Astronomical Observatory," Appl. Opt. 49, G129-G135 (2010)). Aberrations will not only reduce the spatial resolutio...

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Application Information

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IPC IPC(8): G01J3/28G01J3/10G01J3/02G01J3/04
CPCG01J3/2823G01J3/0208G01J3/04G01J3/10G01J2003/2866
Inventor 郑联慧肖荣辉洪海莲林俊武颜慧贤
Owner SANMING UNIV
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