Zeiss projector
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A Zeiss projector is a special projector used in planetariums.
The first modern planetarium projectors were designed and built by Carl Zeiss in 1924. Zeiss projectors are designed to sit in the middle of a dark, dome-covered room, and project an accurate image of the stars and other astronomical objects on the dome. They are generally large, complicated, and imposing, looking not unlike a many-eyed ant.
The name "Zeiss projector" is often used for any type of star projector, even those not built by Zeiss. Being extremely complex, a large Zeiss projector can cost millions of US dollars.
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