St. Louis Debuts Nation’s Most Advanced Hybrid Planetarium

The renovation centers on the installation of the GOTO Chiron III Hybrid Star Projector, the first of its kind in the U.S., capable of rendering 9,500 stars with precise color accuracy. This optomechanical system works in tandem with the Cosm Digistar Full-Dome Data Visualization System to provide photorealistic, 360-degree views of the cosmos, ranging from Saturn’s rings to live geospatial data mapping. Backed by a gift from the St. Louis-based Centene Foundation, the project represents the facility's most significant advancement in over 25 years.

Beyond the visuals, the Orthwein StarBay has been outfitted with a 22,000-watt surround-sound system and the region’s first public Auracast hearing assistance technology. These upgrades allow staff to debut new, educator-led programming, including updated versions of the classic "The Sky Tonight" and the satellite-driven "The Earth Today." According to Planetarium Manager Will Snyder, the hybrid approach bridges the gap between traditional constellation-driven astronomy and modern, real-time digital immersion, offering visitors a clearer look at the universe than ever before.