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A planetarium projector, also known as a star projector, is a device used to project images of celestial objects onto the dome in a planetarium. Modern planetarium projectors were first designed and built by the Carl Zeiss Jena company in Germany between 1923 and 1925, and have since grown more complex.
Smaller planetarium projectors include a set of fixed stars, Sun, Moon, and planets, and various nebulae. Larger projectors also include comets and a far greater selection of stars. Additional projectors can be added to show twilight around the outside of the screen (complete with city or country scenes) as well as the Milky Way.
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The dome is the second largest in Europe with a screen area of 830 m 2: Bangkok Planetarium, Bangkok, Thailand: Mark IV: 1964: 2016: Replaced by an Evans & Sutherland Digistar 5. The projector is still inside the planetarium but not in operation. [12] Denki kagakukan , Osaka, Japan: Mark II (No.23) 1937: 1989: First Planetarium in Japan
A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers.
The first half of the book described the sky and legends attached to it. The last half of the book contained star charts to be punched out and held in front of lamps, projecting stars in their proper relationships onto a wall or other smooth clear surface. Spitz dodecahedron planetarium projector (1953) A Spitz Junior home planetarium projector ...