Experimental and numerical studies of stitching interferometry for optical testing of large space telescopes

大空间望远镜光学测试拼接干涉测量的实验与数值研究

• 批准号: 23654066
• 负责人: KANEDA Hidehiro
• 金额: $ 2.25万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23654066/
• 关键词: 宇宙望遠鏡; 干渉計測定; 波面縫い合わせ; 宇宙赤外線望遠鏡; 波面縫い合わせ測定; 光学干渉計測定; 光学計測; 冷却赤外線望遠鏡

In general, the wave-front error of a telescope is measured by using an optical interferometer through autocollimation by reflecting flat mirrors. For a large (>1 m) telescope, however, it is difficult to manufacture accurate flat mirrors with sizes comparable to the telescope and thus to measure the full aperture of the telescope at one time. Instead, small mobile flat mirrors are used to measure the sub-pupils and then stitch them to the whole aperture. In this study, stitching measurements of a 80-cm telescope with a 30-cm flat mirror were conducted with our software. The mesurements were repeated with a high-precision flat mirror and then with another flat mirror which has a designed large deformation. As a result, the feasibility of the stitching interferometry is verified. It is also found that the error of the flat mirror gives a serious impact on the stitching result. Finally, a new algorithm is implemented in the software to find that it mitigates the flat mirror error.

望远镜的波前误差一般是用光学干涉仪通过反射平面镜进行自准直来测量的。然而，对于大型(&gt；1米)望远镜，很难制造尺寸与望远镜相当的精密平面镜，从而一次测量望远镜的全口径。取而代之的是，使用小的移动平面镜来测量子瞳孔，然后将它们缝合到整个光圈上。在本研究中，使用我们的软件对一个80厘米的望远镜和一个30厘米的平面镜进行了拼接测量。用高精度的平面镜重复测量，然后用另一个设计的大变形平面镜重复测量。验证了拼接干涉测量方法的可行性。研究还发现，平面镜的误差对拼接效果有很大影响。最后，在软件中实现了一种新的算法，该算法减小了平面镜的误差。

项目成果

大型宇宙望遠鏡の光学試験のための新しい波面縫い合わせ法の開発

开发用于大型空间望远镜光学测试的新型波前拼接方法

• 发表时间: 2013
• 作者: 國生拓摩;金田英宏;山岸光義;内藤聖貴;今井正;片山晴善;中川貴雄;尾中敬
• 通讯作者: 尾中敬

An experimental study of stitching interferometry for the SPICA telescope

SPICA望远镜拼接干涉测量实验研究

• 发表时间: 2013
• 作者: T. Kokusho;H. Kaneda;M. Yamagishi;M. Naito;T. Imai;H. Katayama;T. Onaka;T. Nakagawa
• 通讯作者: T. Nakagawa

大型望遠鏡の光学試験のための新しい波面縫い合わせ法の開発

开发用于大型望远镜光学测试的新型波前拼接方法

• 发表时间: 2013
• 作者: 國生拓摩;金田英宏
• 通讯作者: 金田英宏

Cryogenic silicon carbide mirrors for infrared astronomical telescopes: lessons learnt from AKARI for SPICA

• DOI: 10.1117/12.2026662
• 发表时间: 2013-09
• 作者: T. Onaka;H. Kaneda;M. Kawada;K. Enya;T. Nakagawa

SPICA 搭載冷却望遠鏡 検討状況と低温光学試験計画

SPICA冷却望远镜研究现状及低温光学测试计划

• 发表时间: 2011
• 作者: C. De Breuck;R. Williams;M. Swinbank;P. Caselli;K. Coppin;T. Davis;R. Maiolino;T. Nagao;I. Smail;F. Walter;A. Weiss;and M. Zwaan;Sumio Yamada;金田英宏
• 通讯作者: 金田英宏