Synthetic aperture type high-resolution imaging telescope device based on bright source

Abstract

The invention discloses a synthetic aperture type high-resolution imaging telescope device based on a bright source. The synthetic aperture type high-resolution imaging telescope device is composed of a receiving pupil whose diameter d is matched with the current observatory address seeing, a synthetic aperture type optical imaging system and a telescope imaging system having a main mirror diameter of D. A sparse aperture array and delay line compensators are arranged in the synthetic aperture type optical imaging system. The sparse aperture array includes a plurality of sub-mirrors having an aperture of d which are distributed in a plurality of multistage two-dimensional spaces. The sub-mirrors comprise a spectroscope, a transmitting mirror and a plane mirror. The delay line compensators are arranged on the output optical path of each sub-mirror separately. The plurality of sub-mirrors are used to acquire nearly-complete real-time UV plane coverage on a focal plane through the multistage spectral arrangement according to the energy ratio. The delay line compensators are used to compensate the optical path difference of each aperture to acquire the outgoing diffraction limit wavefront on the sparse aperture array longest baseline D and output the outgoing diffraction limit wavefront to the telescope imaging system having a main mirror diameter of D. According to the invention, advantages of low cost and simple system can be realized, and high time and space resolution diffraction limit imaging can be obtained on a real-time basis.

Description

technical field [0001] The invention relates to a synthetic aperture high-resolution imaging telescope device based on a bright source, in particular to a high-time and space-resolution diffraction-limited imaging device free from complex deformable mirror adaptive optics. Background technique [0002] Maximizing the spatial resolution of astronomical telescopes in order to better observe the shape and structural details of celestial bodies is the dream of astronomers and the goal pursued by astronomical instrument experts. [0003] According to the Rayleigh criterion, the resolution of the telescope is: R=1.22λ / D, where D is the diameter of the entrance pupil. The longer the observation wavelength λ, the greater the D, and the higher the resolving power of the telescope. [0004] Therefore, if you want to improve the resolution, you must increase the aperture of the telescope. The aperture of the telescope cannot be enlarged indefinitely. On the one hand, it is a technical ...

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Problems solved by technology

[0009] In the traditional sense, the optical synthetic aperture telescope is based on long-baseline stellar light interference. Because the sub-telescope has a long baseline, the spatial resolution is high, but the number of baselines (spatial frequencies) is small and incomplete, so it cannot be directly imaged instantaneously. (Using the rotation of the earth or the rotation of the pupil plane), the spatial frequency is complete, so as to realize image reconstruction, and the time resolution is low

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