Inflight Performance and Calibrations of the Lyman-Alpha Solar Telescope on Board the Advanced Space-Based Solar Observatory

IF 2.7 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Solar Physics Pub Date : 2024-08-29 DOI:10.1007/s11207-024-02354-3

Bo Chen, Li Feng, Guang Zhang, Hui Li, Lingping He, Kefei Song, Quanfeng Guo, Ying Li, Yu Huang, Jingwei Li, Jie Zhao, Jianchao Xue, Gen Li, Guanglu Shi, Dechao Song, Lei Lu, Beili Ying, Haifeng Wang, Shuang Dai, Xiaodong Wang, Shilei Mao, Peng Wang, Kun Wu, Shuai Ren, Liang Sun, Xianwei Yang, Mingyi Xia, Xiaoxue Zhang, Peng Zhou, Chen Tao, Yang Liu, Sibo Yu, Xinkai Li, Shuting Li, Ping Zhang, Qiao Li, Zhengyuan Tian, Yue Zhou, Jun Tian, Jiahui Shan, Xiaofeng Liu, Zhichen Jing, Weiqun Gan

{"title":"Inflight Performance and Calibrations of the Lyman-Alpha Solar Telescope on Board the Advanced Space-Based Solar Observatory","authors":"Bo Chen, Li Feng, Guang Zhang, Hui Li, Lingping He, Kefei Song, Quanfeng Guo, Ying Li, Yu Huang, Jingwei Li, Jie Zhao, Jianchao Xue, Gen Li, Guanglu Shi, Dechao Song, Lei Lu, Beili Ying, Haifeng Wang, Shuang Dai, Xiaodong Wang, Shilei Mao, Peng Wang, Kun Wu, Shuai Ren, Liang Sun, Xianwei Yang, Mingyi Xia, Xiaoxue Zhang, Peng Zhou, Chen Tao, Yang Liu, Sibo Yu, Xinkai Li, Shuting Li, Ping Zhang, Qiao Li, Zhengyuan Tian, Yue Zhou, Jun Tian, Jiahui Shan, Xiaofeng Liu, Zhichen Jing, Weiqun Gan","doi":"10.1007/s11207-024-02354-3","DOIUrl":null,"url":null,"abstract":"<div>The Ly\\(\\alpha \\) Solar Telescope (LST) is the first instrument to achieve imaging of the full solar disk and the coronal region in both white light (WL) and ultraviolet (UV) H i Ly\\(\\alpha \\), extending up to 2.5 solar radii (Rs), contributing to solar physics research and space weather forecasting. Since its launch on 9 October 2022, LST has captured various significant solar activity phenomena, including flares, filaments, prominences, and coronal mass ejections (CMEs). On-orbit observation and test results show that LST covers a continuous spatial range and the wavelengths of 121.6, 360, and 700 nm. The Ly\\(\\alpha \\) Solar Disk Imager (SDI) has a field of view (FOV) of 38.4′ and a spatial resolution of around 9.5″, while the White-Light Solar Telescope (WST) has an FOV of 38.43′ and a spatial resolution of around 3.0″. The FOV of the Ly\\(\\alpha \\) Solar Corona Imager (SCI) reaches 81.1′ and its spatial resolution is 4.3″. The stray-light level in the 700 nm waveband is about 7.8 × 10−6 MSB at 1.1 Rs and 7.6 × 10−7 MSB at 2.5 Rs, and in Ly\\(\\alpha \\) waveband it is around 4.3 × 10−3 MSB at 1.1 Rs and 4.1 × 10−4 MSB at 2.5 Rs (MSB: mean solar brightness). This article will detail the results from on-orbit tests and calibrations.</div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"299 8","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solar Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s11207-024-02354-3","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

The Ly\(\alpha \) Solar Telescope (LST) is the first instrument to achieve imaging of the full solar disk and the coronal region in both white light (WL) and ultraviolet (UV) H i Ly\(\alpha \), extending up to 2.5 solar radii (Rs), contributing to solar physics research and space weather forecasting. Since its launch on 9 October 2022, LST has captured various significant solar activity phenomena, including flares, filaments, prominences, and coronal mass ejections (CMEs). On-orbit observation and test results show that LST covers a continuous spatial range and the wavelengths of 121.6, 360, and 700 nm. The Ly\(\alpha \) Solar Disk Imager (SDI) has a field of view (FOV) of 38.4′ and a spatial resolution of around 9.5″, while the White-Light Solar Telescope (WST) has an FOV of 38.43′ and a spatial resolution of around 3.0″. The FOV of the Ly\(\alpha \) Solar Corona Imager (SCI) reaches 81.1′ and its spatial resolution is 4.3″. The stray-light level in the 700 nm waveband is about 7.8 × 10⁻⁶ MSB at 1.1 Rs and 7.6 × 10⁻⁷ MSB at 2.5 Rs, and in Ly\(\alpha \) waveband it is around 4.3 × 10⁻³ MSB at 1.1 Rs and 4.1 × 10⁻⁴ MSB at 2.5 Rs (MSB: mean solar brightness). This article will detail the results from on-orbit tests and calibrations.

Abstract Image

查看原文本刊更多论文

先进天基太阳观测站搭载的莱曼-阿尔法太阳望远镜的飞行性能和校准

Ly （α）太阳望远镜（LST）是第一台实现对整个太阳圆盘和日冕区的白光（WL）和紫外线（UV）H i Ly （α）成像的仪器，可延伸至2.5个太阳半径（Rs），有助于太阳物理研究和空间天气预报。自 2022 年 10 月 9 日发射以来，LST 已经捕捉到各种重要的太阳活动现象，包括耀斑、细丝、突出和日冕物质抛射（CMEs）。在轨观测和测试结果表明，LST覆盖了连续的空间范围以及121.6、360和700纳米的波长。Ly\(α) 太阳盘成像仪（SDI）的视场为 38.4′，空间分辨率约为 9.5″，而白光太阳望远镜（WST）的视场为 38.43′，空间分辨率约为 3.0″。Ly\(alpha\) 太阳日冕成像仪（SCI）的视场达到 81.1′，空间分辨率为 4.3″。700 nm 波段的杂散光水平在 1.1 Rs 时约为 7.8 × 10-6 MSB，在 2.5 Rs 时约为 7.6 × 10-7 MSB，而 Ly （α）波段的杂散光水平在 1.1 Rs 时约为 4.3 × 10-3 MSB，在 2.5 Rs 时约为 4.1 × 10-4 MSB（MSB：平均太阳亮度）。本文将详细介绍在轨测试和校准的结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Solar Physics 地学天文-天文与天体物理

CiteScore

5.10

自引率

17.90%

发文量

146

审稿时长

1 months

期刊介绍： Solar Physics was founded in 1967 and is the principal journal for the publication of the results of fundamental research on the Sun. The journal treats all aspects of solar physics, ranging from the internal structure of the Sun and its evolution to the outer corona and solar wind in interplanetary space. Papers on solar-terrestrial physics and on stellar research are also published when their results have a direct bearing on our understanding of the Sun.