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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.
The A Series As noted, Spitz wanted to create a projector more affordable than the German Zeiss "all optical" projectors. Thus, all of his projectors used large "star balls" that relied on the pinhole lens principle, where star images became smaller (more realistic) as the starlight source (in center of the star ball) was more distant from the star-ball surface.
Debuting at the 2025 CES, Glomensio’s Firefly Gen 2 is a compact and smart “Light-Up House Address Number” that automatically flashes red and blue lights when 911 is dialed, making the home ...
This Amazon projector deal gets you the AuKing portable projector, a remote control, power cord, HDMI cable, AV cable and user manual for just $65. Regularly $99+, the deal saves you 34% off one ...
Retrieved from "https://en.wikipedia.org/w/index.php?title=Star_projector&oldid=233474926"This page was last edited on 22 August 2008, at 04:39 (UTC) (UTC)
Holiday Projector Lights. This projector can see you through the whole holiday season since it features different modes with designs for Halloween, Thanksgiving, Christmas, Valentine's Day and more.