【摘要】 本文报告了云南天文台太阳多波段光谱仪通过技术改造把传统的光谱仪优点和二维单色像组成的视而光谱仪优点结合起来,采取高精度扫描方法同时获得10波段光谱,使之发展成为一种新型的光谱仪——太阳三维光谱仪。这种三维光谱仪的优点是可快速得到活动区中每一点多条谱线轮廓,从而得到它的物理量场,并且可观测这些物理量场时间和空间上的演化。 文中介绍了太阳多波段快速扫描光谱仪的光学系统和为实现三维观测而研制的可控制高精度45°镜转台,具有不同画幅面的专用照像机以及微机控制的自动化电器系统,望远镜电控系统。更多还原

【Abstract】 Through the technical transformation of combination of the advantages of a traditional spectrograph and a two-dimensional image-forming spectrograph, a multi-waveband solar spectrograph of the Yunnan Observatory is developed into a newtype spectrograph——a three-dimensional solar spectrograph. It can make a highlyaccurate scan of a solar image and obtain spectra at 10 wave bands simultaneously. One of the advantages of the three-dimensional spectrograph is a fast acquization of many profiles at each point in an active region, thereby its physical quantity fields are obtainable and the evolution of the fields is observable as a function of time and space.Our work is to develop a 45℃ mirror revolving stage with higher precision, of which the step length can be controlled when it revolves. It is attached to a 40-cm horizontal multiwaveband solar spectrograph of the Yunnan Observatory, so as to make the solar image scan across the incident slit of the spectrograph homogeneously. The accuracy of the image is as follows: 1) The pulsation of the solar image is less than 1"; 2) The step length accuracy of the solar image scanning point by point is less than 1"; ’3) The restoration accuracy is 1" and 4) The scanning range is 6’×6’.更多还原