Christoph Scheiner's Helioscope

A helioscope is an instrument used in observing the sun and sunspots. 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]

See also


  1. ^ Helioscope - Museo Galileo
  2. ^ Helioscope video - Museo Galileo
  3. ^ Scheiner, Christoph (1630). Rosa Ursina. pp. 137–8. External link in |title= (help) (Latin)