Helioscope

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Scheiner's Helioscope

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.[1][2]

The first machina helioscopica or helioscope was designed by Christoph Scheiner (1575 –1650) to assist his sunspot observations.[3]

References[edit]

  1. ^ Helioscope - Museo Galileo
  2. ^ Helioscope video - Museo Galileo
  3. ^ Scheiner, Christoph (1630). Rosa Ursina. pp. 137–8.  (Latin)

See also[edit]