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A helioscope is an instrument used in observing the sun and sun spots. The helioscope was first used by Benedetto Castelli (1578-1643) and refined by Galileo (1564–1642). The method involves projecting an image of the sun onto a white sheet of paper suspended in a darkened room with the use of a telescope.〔(Helioscope ) - Museo Galileo〕〔(Helioscope video ) - Museo Galileo〕 The first ''machina helioscopica'' or helioscope was designed by Christoph Scheiner (1575 –1650) to assist his sunspot observations.〔 (Latin)〕 ==See also== *Solar telescope *Heliometer *Spectroheliograph *Spectrohelioscope 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Helioscope」の詳細全文を読む スポンサード リンク
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