论文标题
从太阳能电晕成像仪的表面散射中的杂散光原发镜的模拟
Simulations of stray light from the surface scattering of the Solar Corona Imager primary mirror
论文作者
论文摘要
Solar Corona Imager是ASO-S任务上的内部神秘的Coronagraph，其优势是成像H i {lyman- \ textalpha}（ly-alpha）（ly-alpha）和White-Light（WL）波段的内部电晕。但是，主镜（M1）对太阳盘光的散射成为杂散光的主要来源。为了研究流浪光抑制的方法，使用了三个散射模型来模拟Zemax Opticstudio中的M1散射。在两个通道中，冠状发射与预测的散落光的比率沿视场降低。 Ly-Alpha通道中的杂散光通常低于冠状发射，但是WL通道中的杂散光往往比2.5 RSUN时的冠状信号高一个数量级。获得了抑制杂散光的优化参数组合，从而获得了M1制造的一些限制。此外，建议使用K相关模型来模拟表面散射。
The Solar Corona Imager is an internally occulted coronagraph on board the ASO-S mission, which has the advantage of imaging the inner corona in H I {Lyman-\textalpha} (Ly-alpha) and white-light (WL) wavebands. However, scattering of solar disk light by the primary mirror (M1) becomes the main source of stray light. To study the methods of stray light suppression, three scattering models are used to model M1 scattering in Zemax OpticStudio. The ratio of coronal emission to predicted stray light decrease along field of view in both channels. The stray light in Ly-alpha channel is generally lower than coronal emission, but the stray light in WL channel tends to be one order of magnitude higher than coronal signal at 2.5 Rsun. Optimized parameter combinations that suppress the stray light to required level are obtained, which put some limitations on the M1 manufacture. Besides, K-correlation model is recommended to simulate surface scattering.
