DEVELOPMENT OF LARGE-APERTURE COOLED LIGHT-WIGHT MIRRORS FOR SATELLITE USE

卫星用大口径冷却光学镜的研制

• 批准号: 13359001
• 负责人: ONAKA Takashi
• 金额: $ 28.2万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13359001/
• 关键词: I ARGF COOLED TELESCOPF; CARBON-FIBER; LIGHT-WEIGHT MIRROR; SPACE-BORNE INSTRUMENTS; SPACE OBSERVATIONS; LOW-TEMPERATURE PROPERTIES; カーボンファイバー; 衛星搭載機器

We have developed mirrors made of carbon-fiber reinforced plastic (hereafter CFRP) for cooled infrared telescope. The major goal of this research is to establish the method to make CFRP mirrors by replication and we have the following improvements and results.1. We have confirmed that CFRP that has the coefficient of thermal expansion less than 2ppm/K for K150K can be produced.We have also measured the thermal conductivity of CFRP at low temperatures.2. We have tried several methods for replication of CFRP flat mirrors and made CFRP mirrors with the surface roughness less than 10-20mm (rms). We have further improved the roughness by increasing the dispersion of fibers.3. We have also tried epoxy coating to improve the surface roughness and made mirrors with the surface roughness less than a few nm (rms). We have also confirmed the applicability of gold and aluminum coating.4. We have applied the above method to spherical mirrors and confirmed that similar surface qualities can be achieved, We have found that the back structure is needed to improve the surface figure. The thickness of the surface skin is also found to be critical to maintain good figures.5. Based on the above investigations we have established the basic replication method for CFRP mirrors and summarized future improvement possibilities.

我们开发了用于冷却红外望远镜的碳纤维增强塑料（以下简称CFRP）制成的镜子。本研究的主要目的是建立碳纤维复合材料反射镜的复制制作方法，并取得以下的改进与成果.确定了在K150 K下热膨胀系数小于2 ppm/K的CFRP材料的制备方法，并测量了CFRP材料的低温导热系数.我们尝试了几种CFRP平面镜的复制方法，并制作出表面粗糙度小于10- 20 mm（rms）的CFRP平面镜。我们通过增加纤维的分散性进一步改善了粗糙度。我们还尝试了环氧树脂涂层来改善表面粗糙度，并使反射镜的表面粗糙度小于几nm（rms）。我们还确认了金和铝涂层的适用性。4.我们将上述方法应用于球面镜，并证实可以获得类似的表面质量。我们发现，需要背面结构来改善表面形状。表面皮肤的厚度也被发现是保持良好身材的关键。基于以上研究，我们建立了碳纤维反射镜的基本复制方法，并总结了未来的改进可能性。

项目成果

K.Mochizuki: "Search for the [CII] 158 Micron Emission toward the Blue Compact Dwarf Galaxy IZw 36"Astronomy & Astrophysics. 370. 868-874 (2001)

K.Mochizuki：“寻找朝向蓝紧凑矮星系 IZw 36 的 [CII] 158 微米发射”天文学

Cryogenic Optical Testings of Sandwich-type Silicon Carbide Mirrors

三明治型碳化硅反射镜的低温光学测试

• 发表时间: 2003
• 期刊: Applied Optics 42
• 作者: T.Onaka;H.Kaneda;T. Onaka;H. Kaneda;H.Kaneda
• 通讯作者: H.Kaneda

T.Onaka: "Telescope System of the Space Infrared Telescope for Cosmology and Astrophysics (SPICA) Mission"ESA Symposium Publication. (印刷中). (2004)

T. Onaka：“用于宇宙学和天体物理学 (SPICA) 任务的望远镜系统”欧空局研讨会出版物（2004 年）。

T.Onaka: "ASTRO-F : Infrared Imaging Surveyor (IRIS) Mission"Journal de Physique IV. (印刷中). (2002)

T. Onaka：“ASTRO-F：红外成像测量仪 (IRIS) 任务”Journal de Physique IV（出版中）。

Flight Calibration of the Mid-Infrared Spectromenter(MIRS) on board the IRTS

IRTS 上中红外光谱仪 (MIRS) 的飞行校准

• 发表时间: 2003
• 期刊: ESA Symposium Publication 481
• 作者: T.Onaka;H.Kaneda;T. Onaka;H. Kaneda;H.Kaneda;T.Onaka;H.Kaneda;H. Kaneda;T. Onaka
• 通讯作者: T. Onaka