Catalogs of solar observations of Meudon and Haute Provence Hα heliographs (1...
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Hα heliographs are imaging instruments designed to produce monochromatic images of the solar chromosphere at fast cadence (60 s or less). They are designed to monitor the...
Hα太阳照相仪（Hα heliographs）是一类专为以60秒或更短的快速观测间隔生成太阳色球层单色图像而设计的成像仪器，其设计用途为监测……
