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Scioptric Ball or Sky Optick, English?, Early 18th Century

preview image for Scioptric Ball or Sky Optick, English?, Early 18th Century
Object is on display.
Inventory Number: 78216
Object Type:
Place Created: United Kingdom (England) Europe
Accession Number: 1925-43
Brief Description: Glass lens in a wood mount. Unsigned and undated. Early 18th century.

A sky optick, or more usually 'scioptric' or 'scioptrick' consists of a long focus lens (or lenses) fixed in a universal mounting which can be placed in the window shutter of a darkened room. The sky optick will then project a reduced image of the landscape on to a wall or screen inside the room, so turning the room into a large form of camera obscura.

Sky opticks could also be used for viewing eclipses and sunspots on a screen, and the more elaborate instruments were fitted with a diaphragm for reducing the amount of light transmitted.
Provenance: Lent by Christ Church, Oxford in 1925.
Collection Group: Orrery Collection
Height Width Depth Diameter Unit
137 137 mm


Image with multimedia irn 24244

Permalink: http://www.mhs.ox.ac.uk/object/inv/78216