A large vision far -field ultraviolet spectrum imaginger

A technology of ultraviolet spectroscopy and imager, applied in the field of spectral imager, can solve problems such as indistinguishability and difficulty in suppressing stray light

Active Publication Date: 2020-12-29
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

However, when there are spectral lines close to each other in the emission spectrum of the target, the images of different spectral lines will overlap and cannot be distinguished
In addition, for such a seamless system, stray light suppression will be very difficult

Method used

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  • A large vision far -field ultraviolet spectrum imaginger
  • A large vision far -field ultraviolet spectrum imaginger
  • A large vision far -field ultraviolet spectrum imaginger

Examples

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Embodiment Construction

[0026] The present invention will be described in further detail below through examples, and the following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0027] Such as figure 1 As shown, a large-field far-ultraviolet spectral imager of the present invention includes a Gregorian telescope, a monochromator, imaging optics and a detector. The monochromator separates the incident beam collected by the telescope into several wavelength channels (three in the figure) along the direction of dispersion. The channel bandwidth can be adjusted by the width of the incident and exit slits of the monochromator to adapt to different spectral resolutions. rate demand. Each separated channel is converged by an independent imaging mirror to form a full-field image, and the images of different channels are finally formed in different areas of the same MCP detector.

[0028] 1) Gregorian Telescope

[0029] The telescope...

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Abstract

The invention discloses a large-visual-field far-ultraviolet spectrum imager. The imager comprises a Gregory telescope, a monochromator, an imaging optics unit and a detector. The monochromator separates an incident light beam collected by the telescope into a plurality of wavelength channels in a dispersion direction; each separated channel is converged by an independent imaging lens to form a full-visual-field image; and the images of different channels are finally formed in different regions of the same detector. According to the imager, a large visual field with the diameter of more than 20 minutes of arc can be realized and is superior to the spatial resolution of 30 seconds of arc and the medium and adjustable spectral resolution of 500-2,000; and the imager is suitable for scientific application with large visual field and medium spectral resolution requirements.

Description

technical field [0001] The invention relates to a spectral imager, in particular to a large-field far-ultraviolet spectral imager. Background technique [0002] The imaging spectrometer is an astronomical observation instrument with both optical imaging and spectral measurement functions. It can simultaneously obtain the two-dimensional spatial distribution and spectral characteristics of astronomical targets, thereby constructing rich three-dimensional information of the observed targets. In the far ultraviolet (FUV) band, the imaging spectrometer is one of the important observation methods for the study of intergalactic warm gas, intergalactic medium, and exoplanets, thus helping to answer "missing cosmic baryons" and "galaxy accretion and feedback" and other important international scientific frontier issues. [0003] In the FUV band, the main difficulty in the design of imaging spectrometers lies in the lack of lens materials with good light transmission performance in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28
CPCG01J3/2823
Inventor 娄铮纪丽
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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