The 3.5-m all-SiC telescope for HERSCHEL
The 3.5-m all-SiC telescope for HERSCHEL
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HERSCHEL 的 3.5 米全碳化硅望远镜
DOI：
10.1117/12.551616
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
D. Castel
中科院分区：
文献类型：
--
作者：
Y. Toulemont;T. Passvogel;G. Pilbratt;D. de Chambure;D. Pierot;D. Castel
Herschel位于L2拉格朗日点，在80至670 μm波长的光谱范围内工作，致力于远红外、亚毫米和毫米波长的天文研究。赫歇尔望远镜是一个“全碳化硅”望远镜，基于3.5米直径的卡塞格伦设计。驱动要求是大直径（3; 5 m），这代表了制造挑战，尽管工作温度为70 K，WFE仍保持在6μrms以下，最后质量保持在300 kg以下。望远镜的尺寸给制造过程和测试设施的安装带来了一些挑战。在此阶段，主要的关键阶段，即钎焊和主镜的研磨已成功通过。赫歇尔望远镜的开发和制造是欧洲航天局（ESA）资助的赫歇尔普朗克计划的一部分。
Placed on the L2 Lagrangian point, Herschel operates in the spectral range between 80 and 670 μm wavelength and is devoted to astronomical investigations in the far-infrared, sub-millimetre and millimetre wavelengths. The Herschel Telescope is an "all Silicon Carbide" Telescope, based on a 3.5-m-diameter Cassegrain design. The driving requirements are the large diameter (3;5m) which represents a manufacturing challenge, the WFE to be kept below 6μrms despite the operational temperature of 70K, and finally the mass to be kept below 300kg. The size of the Telescope has put some challenges in the manufacturing processes and the tests facilities installations. At this stage, the major critical phases which are the brazing and the grinding of the primary mirror have successfully been passed. The development and manufacturing of the Herschel Telescope is part of the Herschel Planck program funded by the European Space Agency (ESA).