New Horizons上的远程侦察成像仪
Long-Range Reconnaissance Imager on New Horizons
摘要：
长距离侦察成像仪（LORRI）是新视野号冥王星任务的高分辨率成像仪器，它的巨大卫星Charon，它的小卫星Nix和Hydra以及柯伊伯带，柯伊伯带是从海王星轨道延伸到50个天文单位（AU）的巨大冰体区域。新视野号于2006年1月19日发射，是NASA新边疆计划的首个任务。LORRI是一个窄角度（视场=0.29度），高分辨率（4.95微拉德像素），里奇-克雷蒂安望远镜，主镜直径为20.8厘米，焦距为263厘米，和一个三透镜场平坦组件。一个1024 × 1024像素（光学有源区），减薄，背面照明电荷耦合器件（CCD）检测器中使用的焦平面单元，并在帧传输模式下操作。LORRI在大约从350 nm延伸到850 nm的带通上提供全色成像。LORRI在一个极端的热环境中运行，位于温暖的航天器内，有一个大的开放式光圈观察寒冷的空间。LORRI有一个碳化硅光学系统，设计用于在工作温度范围内保持焦点，而无需焦点调节机构。此外，航天器是推力稳定的，没有反作用轮，对可用的曝光时间和满足测量要求所需的光通量施加了严格的限制。
英文摘要：
The LOng-Range Reconnaissance Imager (LORRI) is the high resolution imaging instrument for the New Horizons mission to Pluto, its giant satellite Charon, its small moons Nix and Hydra, and the Kuiper Belt, which is the vast region of icy bodies extending roughly from Neptune's orbit out to 50 astronomical units (AU). New Horizons launched on January 19, 2006 as the inaugural mission in NASA's New Frontiers program. LORRI is a narrow angle (field of view=0.29 deg), high resolution (4.95 microrad pixels), Ritchey-Chretien telescope with a 20.8 cm diameter primary mirror, a focal length of 263 cm, and a three lens field-flattening assembly. A 1024 x 1024 pixel (optically active region), thinned, backside-illuminated charge-coupled device (CCD) detector is used in the focal plane unit and is operated in frame transfer mode. LORRI provides panchromatic imaging over a bandpass that extends approximately from 350 nm to 850 nm. LORRI operates in an extreme thermal environment, situated inside the warm spacecraft with a large, open aperture viewing cold space. LORRI has a silicon carbide optical system, designed to maintain focus over the operating temperature range without a focus adjustment mechanism. Moreover, the spacecraft is thruster-stabilized without reaction wheels, placing stringent limits on the available exposure time and the optical throughput needed to satisfy the measurement requirements.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
