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空间太阳望远镜(Space Solar Telescope,SST)主光学望远镜(Main Optical Telescope,MOT)口径达1 m,以2.8′×1.5′有效视场对日成像,将获得0.1″~0.15″的图像。SST MOT对日观测时所接收到的热量超过千瓦,成为影响望远镜成像质量的主要热源和杂散光源。为此,文中首先探讨了大口径太阳望远镜热设计与消杂光设计的特殊关联。然后,针对主镜筒内消杂散光的内遮光罩结构提出了热兼容设计,确定了内遮光罩结构热-杂散光效应集成设计的目标与评价体系。借助热分析软件获取SST MOT因内遮光罩结构参数变化引起的系统温度的变化趋势,从热控角度对内遮光罩结构的设计提出了建议:内遮光罩结构的垂直高度不宜超过400 mm。探索的内遮光罩结构热-杂散光效应集成分析方法也可为其他太阳望远镜的综合优化提供参考。
Space Solar Telescope (SST) The main optical telescope (Main Optical Telescope, MOT) diameter of 1 m, with 2.8 ’× 1.5’ effective field of view of the day imaging, will obtain 0.1 “~ 0.15” image. SST MOT received more than kilowatts of heat during the observation of Japan and became the main source of heat and stray light affecting the image quality of the telescope. To this end, the paper first explores the special relationship between the thermal design and the evanescent design of large-aperture solar telescopes. Then, a heat-compatible design is proposed for the structure of the inner lens of the main tube with the stray light, and the goal and evaluation system of the integrated design of the thermal-stray light effect of the inner lens structure are determined. The thermal analysis software is used to get the trend of system temperature caused by the change of the structure parameters of SST MOT. The design of the inner sunshade structure is proposed from the thermal control angle. The vertical height of the inner sunshade structure should not exceed 400 mm. Exploration of Inner Hood Thermal-Stray Light Effects Integrated analysis methods can also provide a reference for the comprehensive optimization of other solar telescopes.