A solar grating spectral imaging device capable of correcting system aberrations

Abstract

The invention provides a solar grating spectrum imaging device capable of correcting system aberration. On the premise that cost and system complexity are not increased evidently, an adaptive optical system with double wavefront detectors is formed by an adaptive optical system integrated in a telescope system and a wavefront detector arranged at a conjugation position of a focal surface of a spectrograph system. Therefore, the solar grating spectrum imaging device is not only capable of correcting dynamic wavefront aberration but also capable of correcting static aberration of the whole optical system to give great significance to improvement of spectral imaging quality of the spectrum imaging device.

Description

technical field [0001] The invention relates to a solar grating spectral imaging device, in particular to a solar adaptive optical grating spectral imaging device capable of correcting atmospheric wavefront aberration and spectrometer system aberration. Background technique [0002] The solar imaging grating spectrometer is an important instrument for studying the stratification characteristics of the solar atmosphere. It can not only observe the solar atmosphere in multiple bands simultaneously, but also observe the fast moving targets in the solar atmosphere (Huang Youran, Xu Aoao, Qin Zhihai, etc. Measured Astrophysics [M]. Beijing: Beijing Science Press, 1987.). In addition, through the spectral observation of the solar atmosphere, the thermodynamic parameters corresponding to the erupted solar atmosphere can be obtained, such as solar temperature, element abundance, radial velocity field and magnetic field and other important information. However, the performance of so...

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Problems solved by technology

The two methods mentioned above are only aimed at the wavefront aberration caused by the atmospheric turbulent aberration, and the static wavefront caused by the adjustment error of the telescope system and the spectrometer system and the processing error of the optical components, etc. Aberrations cannot be corrected with adaptive optics

These static aberrations will seriously attenuate the spectral imaging quality of the solar grating spectrometer, which will not only lead to the attenuation of the spectral resolution of the solar grating spectrometer, but also lead to the attenuation of the energy utilization rate of the solar grating spectrometer, so that it is impossible to measure the solar atmospheric activities. Accurate observations and high-precision tomographic studies

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