Calibration of a multiwavelength co-phase measurement system for a segmented solar telescope
文献类型：期刊论文
| 作者 | Wang QK(王焌珂)1,2; Jin ZY(金振宇)1,3; Dai YC(戴懿纯)1,3; Wang B(王斌)1,3; Wang XQ(王希群)1,3 |
| 刊名 | Astronomical Techniques and Instruments/天文技术与仪器(英文)
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| 出版日期 | 2026-03 |
| 卷号 | 3期号:02 |
| ISSN号 | 1672-7975 |
| DOI | 10.61977/ati2025038 |
| 产权排序 | 第1完成单位 |
| 英文摘要 | The segmented solar telescope described in this study employs a simultaneous dual-wavelength measurement technique to achieve co-phase alignment. To meet the measurement requirements of a 20 μm range, 5 nm root mean square precision, and edge jump rates of < 10-6, this study focused on calibrating the dual-wavelength measurement system for the segmented-mirror solar telescope. Analysis of the relative error in the measurement system revealed that assembly-induced errors such as defocus, translation, scaling, and rotation markedly degrade measurement accuracy. To address these issues, we propose a defocus error compensation algorithm, based on the light intensity distribution of the point spread function(PSF) and an affine transformation model, to calibrate spatial pose deviations across the two measurement channels. A dual-wavelength measurement system was implemented on a segmented-mirror experimental platform for calibration. Experimental results demonstrated that the mean relative error decreased from -0.642 3 to -0.034 5 nm after calibration, reflecting improved reliability and stability of the co-phase measurements. |
| 学科主题 | 光学 ; 天文学 ; 天文学其他学科 ; 机械工程 ; 仪器仪表技术 ; 光学技术与仪器 ; 天文仪器 |
| 分类号 | P111.41 |
| URL标识 | 查看原文 |
| 资助项目 | Yunnan Revitalization Talent Support Program [202305AS350029 and 202305AT350005]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project [202105AB160001]; Yunnan Key Laboratory of Solar Physics and Space Science [202205AG070009]; Yunnan Provincial Science and Technology Department [202401AU070062] |
| 语种 | 英语 |
| 资助机构 | Yunnan Revitalization Talent Support Program [202305AS350029 and 202305AT350005] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project [202105AB160001] ; Yunnan Key Laboratory of Solar Physics and Space Science [202205AG070009] ; Yunnan Provincial Science and Technology Department [202401AU070062] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29135]  |
| 专题 | 天文技术实验室 |
| 通讯作者 | Jin ZY(金振宇) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences; 2.University of Chinese Academy of Sciences; 3.Yunnan Key Laboratory of Solar Physics and Space Science |
| 推荐引用方式 GB/T 7714 | Wang QK,Jin ZY,Dai YC,et al. Calibration of a multiwavelength co-phase measurement system for a segmented solar telescope[J]. Astronomical Techniques and Instruments/天文技术与仪器(英文),2026,3(02). |
| APA | 王焌珂,金振宇,戴懿纯,王斌,&王希群.(2026).Calibration of a multiwavelength co-phase measurement system for a segmented solar telescope.Astronomical Techniques and Instruments/天文技术与仪器(英文),3(02). |
| MLA | 王焌珂,et al."Calibration of a multiwavelength co-phase measurement system for a segmented solar telescope".Astronomical Techniques and Instruments/天文技术与仪器(英文) 3.02(2026). |
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来源：云南天文台
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