Design and assembly of a nested imaging X-ray telescope for the Hot Universe Baryon Surveyor mission  

作　　者：Jun Yu Ruohui Xian Xiaoqiang Wang Yifan Wang Zhanshan Wang Wei Zhang Yibo Cai Jing Yang Xi Lu Wei Wang Wei Cui 

机构地区：[1]Institute of Precision Optical Engineering,Tongji University,Shanghai 200092,China [2]Shanghai Institute of Satellite Engineering,Shanghai 201109,China [3]Department of Astronomy,Tsinghua University,Beijing 100084,China

出　　处：《Astronomical Techniques and Instruments》2024年第3期157-165,共9页天文技术与仪器（英文）

基　　金：supported by National Key R&D Program of China (2022YFF0709101);China National Space Administration (D050104);National Natural Science Foundation of China (62105244 and U2030111)。

摘　　要：The Hot Universe Baryon Surveyor (HUBS) mission will carry a nested X-ray telescope capable of observing an energy range from 0.5 keV to 2 keV to study hot baryon evolution. In this paper, we report the latest progress in the design and construction of nested X-ray telescopes which were designed to use a three-stage conic-approximation type assembly to simplify the manufacturing process. The mirror substrate is made using the thermal glass slumping method, with mirrors characterized by a root-mean-square roughness of 0.3 nm, with expected high reflectivity and good thermal stability. We also discuss methods of telescope construction and conduct a deformation analysis of the manufactured mirror. The in situ measurement system program is developed to guide the telescope assembly process.

关 键 词：Nested X-ray telescope Thermal glass slumping Telescope assembly In situ measurement 

分 类 号：P111[天文地球—天文学]