A Solar Adaptive Optics Grating Spectral Imaging Device That Can Suppress Spectral Broadening

Abstract

The invention provides a solar self-adaptive optical grating spectrum imaging device with spectrum broadening capable of being inhibited. The device comprises a collimator (1), a tilting mirror (2), a wavefront corrector DM (3), a dichroic light splitter (4), a wavefront detector (5), a wavefront controller (6), an imaging system (7), a slit (8), a collimating mirror (9), a grating (10), an imaging mirror (11), a data collecting system (12) and a data processing and control computer (13). According to the device, because the wavefront corrector DM is arranged behind a high-speed inclining reflection mirror, on the premise that cost and complexity are not obviously increased, the high-speed inclining reflection mirror has the inclining aberration correction ability and the other-high-order aberration correction ability. Through analysis and separation carried out on wavefront detector measurement data and alternative difference correction carried out on wavefront aberration types affecting the spectrum broadening of the solar grating spectrum imaging device, solar self-adaptive optical wavefront correction requirements can be effectively lowered, and the spectrum broadening of the solar grating spectrum imaging device can be effectively inhibited as well.

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 suppressing spectral broadening. Background technique [0002] The solar spectrum contains a lot of important information, such as solar temperature, element abundance, radial velocity field, and magnetic field. Accurate spectral detection and imaging detection of the sun is the basis for studying the evolution of solar atmospheric activities and accurate space weather forecasting. Therefore, accurate solar spectrum detection and imaging detection of solar atmospheric activities are very important. The solar grating spectral imaging device has been widely used in the observation of solar atmospheric activities, because it has many outstanding advantages in solar spectrum observation, mainly including: 1) It can perform multi-band simultaneous observation, which is the 2) The measurement of the velocity ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: Atmospheric disturbance will seriously affect the imaging quality and spectral observation performance of the solar grating spectral imaging device. It will not only cause the solar image on the focal plane of the solar telescope to shake, so it is impossible to track and monitor solar atmospheric activities. The spectral imaging observation will also cause the spectral broadening of the solar grating spectral imaging device, resulting in the attenuation of the spectral resolution of the solar grating spectral imaging device

Images