6U CubeSat deployable telescope for optical Earth observation and astronomical optical imaging
6U CubeSat deployable telescope for optical Earth observation and astronomical optical imaging
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用于光学地球观测和天文光学成像的 6U CubeSat 可展开望远镜
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
H. Bruce
中科院分区：
文献类型：
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作者：
N. Schwartz;W. Brzozowski;Z. Ali;M. Milanova;K. Morris;C. Bond;Jennifer Keogh;Douglas Harvey;Lawrence Bissell;J. Sauvage;M. Dumont;C. Correia;Phil Rees;H. Bruce
现有的纳米卫星体积，如立方体卫星，对望远镜直径施加了物理限制，限制了可实现的空间分辨率和测光能力。例如，12U立方体卫星通常仅具有足够的体积来承载20厘米直径的单片望远镜。在本文中，我们提出了最新的进展部署光学主机30厘米+直径的望远镜在6U立方体卫星，4U专用于有效载荷和2U的卫星总线的体积。为了达到这种高度的紧凑性，我们折叠主镜和副镜进行发射，然后展开并在空间中对齐。在光谱的可见光部分的衍射限制成像质量是通过控制活塞，小费，和倾斜的每个镜段。在本文中，我们首先描述了整个卫星的概念，然后我们报告的光学机械设计的有效载荷部署和调整的镜子。最后，我们讨论了自动定相的主要控制最终的光学质量的望远镜。
Available volumes of nanosats such as CubeSats impose physical limits to the telescope diameter, limiting achievable spatial resolution and photometric capability. For example, a 12U CubeSat typically only has sufficient volume to host a 20 cm diameter monolithic telescope. In this paper, we present recent advances in deployable optics to host a 30 cm+ diameter telescope in a 6U CubeSat, with a volume of 4U dedicated to the payload and 2U to the satellite bus. To reach this high level of compactness, we fold the primary and secondary mirrors for launch, which are then unfolded and aligned in space. Diffraction-limited imaging quality in the visible part of the spectrum is achieved by controlling each mirror segment in piston, tip, and tilt. In this paper, we first describe overall satellite concept, we then report on the optomechanical design of the payload to deploy and adjust the mirrors. Finally, we discuss the automatic phasing of the primary to control the final optical quality of the telescope.