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Virtual-aperture complex-amplitude splicing super resolution astronomical telescope system

An astronomical telescope and super-resolution technology, applied in the field of imaging of stars and space targets, can solve problems such as the difficulty of processing and assembling large-scale projects

Active Publication Date: 2016-03-23
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

Its sub-mirror is an off-axis parabola, which poses great engineering difficulties in processing and assembly

Method used

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  • Virtual-aperture complex-amplitude splicing super resolution astronomical telescope system
  • Virtual-aperture complex-amplitude splicing super resolution astronomical telescope system
  • Virtual-aperture complex-amplitude splicing super resolution astronomical telescope system

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Embodiment Construction

[0024] Such as figure 1 As shown, the Cassegrain astronomical telescope system 1, the relay optical path system 8, and the pupil surface complex amplitude measurement splicing and image processing system 11 are composed. Among them, the Cassegrain Astronomical Telescope System 1 composed of six planar / non-planar mirrors magnifies the space object; the relay optical path system 8 conjugates the exit pupil of the Cassegrain Astronomical Telescope 1 to the back-end pupil plane for complex amplitude measurement Stitching and image processing system 11; In the pupil plane complex amplitude measurement stitching and image processing system 11, the beam splitter divides the light into two parts and leads to the microarray lens and the Shack-Hartmann wavefront phase sensor respectively, and the microarray lens Located on the conjugate surface of the exit pupil, it works with the array photon counter to measure the amplitude of the wavefront. The Shack-Hartmann wavefront phase sensor i...

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Abstract

The invention relates to a virtual-aperture complex-amplitude splicing super resolution astronomical telescope system which comprises the components of a Cassegrain astronomical telescope system, a relay optical path system, a pupil plane complex amplitude measurement splicing and image processing system. The Cassegrain astronomical telescope system amplifies a spatial target. The relay optical path system conjugates an exit pupil of the Cassegrain astronomical telescope system to the pupil plane complex amplitude measurement splicing and image processing system at the back end. In the pupil plane complex amplitude measurement splicing and image processing system, a beam splitter mirror splits light into two parts which are respectively emitted to a micro-array lens and a Shack-Hartmann wavefront sensor; the micro-array lens at an exit pupil conjugate plane and an array photon counter realize measurement for a wavefront amplitude together; the Shack-Hartmann wavefront sensor is also arranged at the exist pupile conjugate plane and realizes measurement for a wavefront phase; and finally splicing of multiple complex amplitudes on the virtual aperture is realized through complex amplitude splicing by an image processing computer. The virtual-aperture complex-amplitude splicing super resolution astronomical telescope system has high imaging precision.

Description

technical field [0001] The invention relates to a technical means for an astronomical telescope system with limited aperture to realize super-resolution imaging through a virtual aperture complex amplitude splicing technology, and is especially suitable for imaging stars and space objects. Background technique [0002] In the 400 years since Galileo used the telescope to observe celestial bodies in 1609, the aperture of the telescope has become larger and larger. So far, many large-aperture telescopes of the class above 4 meters have been built, but if you want to build a telescope with an aperture of 10 meters or even dozens There are great difficulties in the preparation of mirror material, processing and testing, support structure and engineering cost for the single-aperture telescope. People began to find another way, looking for new principles and methods to break through the many difficulties in the manufacture of single-aperture telescope systems, while meeting the ne...

Claims

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Application Information

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IPC IPC(8): G02B23/02
CPCG02B23/02
Inventor 张雨东付瀚初魏凯
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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