Infrared Optics Design for the Japan National Large Telescope Project

日本国家大型望远镜项目的红外光学设计

• 批准号: 04044201
• 负责人: KODAIRA Keiichi
• 金额: --
• 依托单位: National Astronomical Observatory
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Overseas Scientific Survey.
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04044201/
• 关键词: Large Telescope; Infrared Optics; Mauna Kea Observatory; Chopping Secondary Mirror

National Astronomical Observatory of Japan (NAOJ) is constructing an 8m reflector at the summit of Mauna Kea in Hawaii which is known to be most suitable site for infrared observation. Dr. Nariai stayed in Hawaii and collaborated with staff members of University of Hawaii and of Mauna Kea Observatories in evaluating infrared data of existing telescopes and Mauna Kea sky, and in designing optical systems for the Japan National Large Telescope (JNLT).The design work resulted in an F/12.2 and a chopping F/35 IR mirror system, for the latter of which active deformation of the main mirror was introduced in order to secure defraction-limit resolution of direct images in mid-IR (-0."2) using quickly developing 2-D array detectors.A wide-field corrector for IR observation at the primary focus was also designed by adopting new glass material for the first time.In order to minimize the instrumental thermal noise background, various devices were recommended, but some crucial issues, such as depletion of radiation from structures supporting the secondary and the tertiary mirrors, remained to be investigated in follow-on tasks.

日本国家天文台 (NAOJ) 正在夏威夷莫纳克亚山山顶建造一个 8m 反射镜，这里被认为是最适合红外观测的地点。 Nariai博士留在夏威夷，与夏威夷大学和莫纳克亚天文台的工作人员合作，评估现有望远镜和莫纳克亚天空的红外数据，并为日本国家大型望远镜（JNLT）设计光学系统。产生了 F/12.2 和斩波 F/35 红外镜系统，其中后者引入了主镜的主动变形，以确保中红外直接图像的偏转极限分辨率(-0."2)采用快速发展的二维阵列探测器。还首次采用新型玻璃材料设计了用于主焦点红外观察的宽视场校正器。为了最大限度地减少仪器热噪声背景，建议了各种设备，但一些关键问题，例如支撑第二和第三反射镜的结构的辐射损耗，仍有待在后续任务中进行研究。

项目成果

小平桂一: "Near-Infrared Imaging of Markarian 231" Publications of Astronomical Society of Japan. 44. L246-L251 (1993)

Keiichi Kodaira：“Markarian 231 的近红外成像”，日本天文学会出版物 44. L246-L251 (1993)。

Keiichi Kodaira: "Near-Infrared Imaging of Markarian 231" Publications of the Astronomical Society of Japan. 44. L246-L251 (1993)

Keiichi Kodaira：“Markarian 231 的近红外成像”，日本天文学会出版物。