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]

References

^ Helioscope - Museo Galileo
^ Helioscope video - Museo Galileo
^ Scheiner, Christoph (1630). Rosa Ursina. pp. 137–8. {{cite book}}: External link in |title= (help) (Latin)

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[1] Helioscope - Museo Galileo

[2] Helioscope video - Museo Galileo

[3] Scheiner, Christoph (1630). Rosa Ursina. pp. 137–8. {{cite book}}: External link in |title= (help) (Latin)

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See also

References