White Light Coronagraph in OSO-7.
White Light Coronagraph in OSO-7.
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OSO-7 中的白光日冕仪。
作者：
M. Koomen;C. R. Detwiler;G. Brueckner;H. W. Cooper;R. Tousey
描述了一种小型外隐 Lyot 型日冕仪，设计用于第七个无人轨道太阳观测站 (OSO-7)。讨论了光学配置、杂散光抑制、SEC 摄像机探测器和数据系统，以及仪器与航天器的集成和在轨运行。轨道操作每天生成 2.8 至 10 个太阳半径的白光日冕图像，至少每天一次，持续 2(3/4) 年。获得了白光日冕瞬变事件的第一个记录，并且日冕显示出不断变化。
A small, externally occulted Lyot-type coronagraph, designed for use in the seventh unmanned Orbiting Solar Observatory (OSO-7), is described. Optical configuration, suppression of stray light, SEC vidicon detector, and data system are discussed, as well as integration of the instrument into the spacecraft and operation in orbit. Orbital operation produced daily images of the white light corona, from 2.8 to 10 solar radii, at least once per day for 2(3/4) yr. The first records of white light coronal transient events were obtained, and the corona was shown to be constantly changing.