A comprehensive guide to projection and LED display technologies across the world's major fulldome venues โ from traditional multi-projector edge blending to the LED revolution. Understanding these systems is essential for producing content that looks its best under the dome.
The dome display is one of the most demanding environments in visual media. A hemispherical surface requires either extreme optics (fisheye lenses), complex multi-projector blending, or thousands of individually addressed LED panels. Each approach brings trade-offs in resolution, contrast, brightness, and cost.
Entry-level fulldome. One DMD chip with a colour wheel. Affordable but can show rainbow artifacts. Common in smaller and portable domes.
Professional fulldome standard. Dedicated chips for R, G, B. No rainbow artifacts, excellent colour accuracy. Christie, Barco, NEC. Used in multi-projector blended arrays.
Blue laser diodes excite a phosphor wheel to produce white light. 20,000+ hour lifespan, stable brightness. The workhorse of modern fulldome projection.
Separate R, G, B laser diodes for pure spectral colours. Widest colour gamut, highest contrast. Used in the Christie Eclipse series (Hayden Planetarium). Premium pricing.
Self-emitting LED panels replace the screen entirely. No cross-bounce, true blacks, 10ร brighter than projection. Cosm CX, MSG Sphere, RSA Cosmos. The future of dome display โ at 2.5โ3ร the cost.
Most fulldome theaters use 2โ9 projectors whose outputs overlap and are electronically blended to create a seamless image. This requires:
LED domes eliminate all of these challenges โ each panel is individually calibrated with no overlap zones.
The timeline of LED in domes:
From the DFW Forum transcripts, key findings on what resolution actually matters:
Research compiled March 16, 2026. Venue data from DFW Forum transcripts (2024โ2026), manufacturer announcements, and publicly available specifications. Always verify directly with venues before production.