A Design Method of Conical-Hyperbolic Nested X-ray Astronomical Telescope Structure

Abstract

The invention relates to a design method of a conical-hyperbolic nested X-ray astronomical telescope structure. The design method comprises the following steps: (1) calculating the lens positions of each group of main lens and auxiliary lens of a Wolter-I type astronomical telescope by a Matlab software, wherein the result is the lens positions of each group of main lens and auxiliary lens of the conical-hyperbolic nested X-ray astronomical telescope; (2) substituting the lens positions of the main lens and the auxiliary lens obtained in the step (1) into a Zemax software, and simulating to obtain imaged spots; and (3) calculating the sizes of the light spots according to basic parameters of the conical-hyperbolic nested X-ray astronomical telescope, comparing the size of the light spots with that of the imaged light spots obtained in the step (2), and analyzing the feasibility. Compared with the classic Wolter-I type nested telescope structure in the prior art, the designed conical-hyperbolic nested X-ray astronomical telescope structure has the advantages that the main lens is designed into a conical surface, so that the manufacturing difficulty and the processing cost are obviously reduced, the resolution ratio is guaranteed and meanwhile, the light collecting area is effectively enlarged simultaneously.

Description

technical field [0001] The invention relates to the field of optical design of an imaging system, in particular to a design method for a conical-hyperbolic nested X-ray astronomical telescope structure. Background technique [0002] X-ray astronomy is a branch of astronomy that studies the X-ray radiation of celestial bodies. The photon energy range of the observed object is between 0.1 and 100keV. Usually, X-rays from 0.1 to 10keV are called soft X-rays, and X-rays from 10 to 100keV are called hard X-rays. In the X-ray band, the refractive index of any material is less than 1 and close to 1. Only when the grazing incidence angle is small can total external reflection be obtained. Therefore, the X-ray direct imaging telescope usually adopts a grazing incidence reflection structure, mainly Kirkpatrick -Baez type, Wolter-I type and lobster eye type. One of the most widely used astronomical telescope designs is the Wolter-I type, whose main body consists of a rotating parabolo...

AI Technical Summary

Problems solved by technology

Depending on the focal length and aperture required for the design of the telescope system, the resolution will drop by a dozen to tens of arcseconds. Such a poor resolution will be difficult to achieve scientists' understanding of space in the future development of astronomical telescopes. observation needs

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