Abstract

This paper presents the project of the space astrophysical observatory Astron-2 aimed to carry out the all-sky spectral and photometric survey in the ultraviolet spectral region (115–310 nm). The major instrument of the observatory is a 210-cm aperture telescope with a field of view of approximately 2 degrees. Six additional telescopes with an aperture of 30–40 cm and a field of view of 10 degrees will be used for the all-sky survey in a wide range of wavelengths simultaneously with ultraviolet observations. The expected timeframe for the construction of the Astron-2 observatory is 2025–2035 with the launch after the completion of the Spektr-UF mission. The list of the most important astrophysical problems that can be solved with Astron-2 is presented. Taking into account the facilities created during the implementation of the Spektr-UF mission, the total cost of Astron-2 will be much less than the NASA and ESA next generation missions. At the same time, this project will become a flagship mission in astrophysics, which will allow Russia to have a “scientific monopoly” in UV observations.

中文翻译：

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天体太空任务Astron-2，用于紫外线光谱域的全天候测量

摘要

本文介绍了太空天体观测站Astron-2的项目，该项目旨在在紫外光谱区域（115-310 nm）内进行全天空光谱和光度测量。天文台的主要仪器是210厘米孔径的望远镜，视野约为2度。六台附加望远镜的孔径为30–40 cm，视场为10度，将在宽波长范围内与紫外线观测同时用于全天空调查。Spektr-UF任务完成后，发射升空的Astron-2天文台的预计建造时间为2025-2035年。列出了可以用Astron-2解决的最重要的天体物理问题。考虑到执行Spektr-UF任务期间创建的设施，Astron-2的总成本将远低于NASA和ESA的下一代任务。同时，该项目将成为天体物理学的一项旗舰任务，这将使俄罗斯在紫外线观测方面拥有“科学垄断”。