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本文介绍基于钠原子滤光器的太阳高光谱观测原理及其典型透射谱型,并介绍观测到的全日面光球层顶部/色球层底部的太阳像.与常规光学干涉滤光相比,钠原子滤光透射峰值正好对应太阳夫琅和费D线的线心位置,因此能长期稳定对太阳进行高光谱观测;超窄带宽的滤光更有利于观测太阳大气诸多细节,如谱斑及其亮网络结构等.用原子滤光(589 nm)在武汉获得的全日面图像与SDO卫星在太空观测(AIA 160 nm真空紫外波长)的结构和细节极为相似,其原因在于两者对太阳大气观测的高度层次类似.因此,本文为高光谱分辨太阳大气精密高度层次的长期稳定观测提供一种有效手段.
In this paper, the principle of solar hyperspectral observation based on sodium atomic filter and its typical transmission spectra are introduced, and the observed solar images at the bottom of the full-day photosphere and the chromosphere are introduced.Compared with conventional optical interference filters, Sodium atomic filter transmission peak coincides with the sun Fraunhofer D line center line, so the long-term stable solar hyperspectral observation; ultra-narrow bandwidth filter is more conducive to observe the solar atmosphere many details, such as the spectrum and Its bright network structure, etc. The structure and details of the whole-day image obtained by atomic filter (589 nm) in Wuhan and that of SDO satellite in space (AIA 160 nm vacuum UV wavelength) are very similar because both of them affect the solar atmosphere Therefore, this paper provides an effective method for hyperspectral long-term stable observation at the precise level of the solar atmosphere.