alb3824207

Helioscope, 17th century

Helioscope. Diagram of a helioscope, an instrument which was used for viewing the sun during the early 1600s. It works by projecting the image seen with a telescope onto a white piece of paper suspended in a darkened room. The first purpose built helioscope was designed by German astronomer Christoph Scheiner (1575-1650) to assist his sunspot observations. Sunspots are dark areas on the Sun's surface caused by fluctuating magnetic fields within the Sun. Scheiner was the co-discoverer of sunspots and published his great work, the 'Rosa Ursina', in the 1630s, from which this illustration was taken. It was the standard treatise on the subject for more than a century, containing numerous observations and also a detailed account of his methods and apparatus.

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Title:

Helioscope, 17th century

Caption:

Helioscope. Diagram of a helioscope, an instrument which was used for viewing the sun during the early 1600s. It works by projecting the image seen with a telescope onto a white piece of paper suspended in a darkened room. The first purpose built helioscope was designed by German astronomer Christoph Scheiner (1575-1650) to assist his sunspot observations. Sunspots are dark areas on the Sun's surface caused by fluctuating magnetic fields within the Sun. Scheiner was the co-discoverer of sunspots and published his great work, the 'Rosa Ursina', in the 1630s, from which this illustration was taken. It was the standard treatise on the subject for more than a century, containing numerous observations and also a detailed account of his methods and apparatus.

Credit:

Album / Science Source / New York Public Library

Releases:

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Image size:

2514 x 3094 px | 22.3 MB

Print size:

21.3 x 26.2 cm | 8.4 x 10.3 in (300 dpi)

Keywords:

1600S • 1630 • 17TH CENTURY • APPARATUS • ARTWORK • ASTRONOMER • ASTRONOMICAL • ASTRONOMY • BEAM • BW • CHRISTOPH SCHEINER • CO-DISCOVERER • DIAGRAM • DIAGRAMS • EQUIPMENT • FIRST • HELIOSCOPE • HELIOTROPII TELIOSCOPICI • HISTORICAL • HISTORY OF SCIENCE • HISTORY • ILLUSTRATION • ILLUSTRATIONS • INSTRUMENT • INSTRUMENTS • MAPPING • MONOCHROMATIC • MONOCHROME • OBSERVATION • OBSERVING • ONE • PEOPLE • PERSON • PIONEER • PIONEERING • PROJECTION • REFLECTION • RESEARCH • RESEARCHING • ROSA URSINA • SINGLE • STANDARD TREATISE • STUDY • STUDYING • SUN • SUNLIGHT • SUNSPOT • SUNSPOTS • TECHNOLOGICAL • TECHNOLOGY • TELESCOPE • VERTICAL LINES • VERTICAL