A Solar Grating Spectral Imaging Device Based on Solar Adaptive Optics System
A technology of adaptive optics and grating spectroscopy, which is applied in the field of solar grating spectral imaging devices, can solve the problems of reducing the working efficiency of solar grating spectral imaging devices, the decrease of energy concentration, and the jittering of solar images, so as to improve time resolution and improve work efficiency. Efficiency, the effect of improving the data signal-to-noise ratio
Active Publication Date: 2015-12-09
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology
The existence of atmospheric turbulence causes problems such as jittering of the solar image on the focal plane of the telescope, energy diffusion and energy concentration decrease, thereby reducing the working efficiency of the solar grating spectral imaging device
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[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0038] A solar grating spectral imaging device based on a solar adaptive optics system, such as figure 1 As shown, the device includes: a collimator 1, a high-speed tilting mirror 2, a wavefront corrector DM3, a dichroic beam 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 acquisition system 12, and a data processing and control computer 13 are composed; wherein:
[0039] After the solar telescope 14 images the active target in the solar atmosphere, it is collimated into parallel light by the collimator 1 and then incident on the high-speed tilting mirror 2, which is used to correct the overall tilt of the wavefront caused by atmospheric turbulence in real time. After passing through the high-speed tilting mirror 2, the light beam is...
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The invention provides a solar grating spectrum imaging device based on a solar adaptive optical system. 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 controlling computer (13). According to the device, the high-speed tilting reflecting mirror, the wavefront corrector, the wavefront detector and the wavefront controller are arranged in the solar grating spectrum imaging device; by analyzing and separating data measured by the wavefront detector and assigning different correction weights to wavefront aberration types affecting the working efficiency of the solar grating spectrum imaging device, wavefront correction requirements of solar adaptive optics can be reduced, the working efficiency of the solar grating spectrum imaging device can be improved, and then the improvement of temporal resolution and the increasing of data signal to noise ratio of the solar grating spectrum imaging device are facilitated.
Description
technical field [0001] The invention relates to a solar grating spectral imaging device, in particular to a solar grating spectral imaging device with high working efficiency based on a solar adaptive optical system. Background technique [0002] The solar spectrum contains a lot of important information, such as solar temperature, element abundance, velocity field and magnetic field, etc. It is of great significance to the study of solar atmospheric activities, and the solar grating spectral imaging device is an important means to achieve these goals. Since the solar grating spectral imaging device has many unique advantages, mainly: 1) It can observe the layered characteristics of the solar atmosphere at the same time in multiple bands; Redshift effect of atmospheric activities; 3) Combining observation with polarization analyzer, four Stokes polarization components can be obtained at the same time, which can be used to study magnetic field and some other thermodynamic par...
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IPC IPC(8): G01J3/28G02B27/00
Inventor 饶长辉郑联慧顾乃庭
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI