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Digital Projection powers ‘seamless’ dome planetarium

Minnesota's Bell Museum has undergone an extensive $79m renovation and now houses the Whitney and Elizabeth MacMillan Planetarium, which is powered by Digital Projection’s INSIGHT Dual Laser 4K projection system.

Minnesota’s Bell Museum has undergone an extensive $79m renovation and now houses the Whitney and Elizabeth MacMillan Planetarium, which is powered by Digital Projection’s INSIGHT Dual Laser 4K projection system.

INSIGHT offers 4K resolution, as well as 27,000 lumens and 20,000 hours of dependable laser phosphor illumination.

The renovation, run by the University of Minnesota’s Capital Planning and Project Management, combines two originally separate entities: The James Ford Bell Museum of Natural History, which had outgrown its 1940’s building within which all its historic dioramas and scientific collections were housed; and the Minneapolis Planetarium, which was demolished in 2002. Sweden-based digital planetarium solution provider, Sciss AB, won the competitive bid for the project with one of its two proposals: the successful Digital Projection laser 4K solution.

The planetarium’s intention was to pair its cutting-edge technology with the University of Minnesota’s latest data research and produce data visualisations that span the arts and sciences – taking audiences from the far reaches of the universe to deep inside the human brain.

That specification called for a 4K, dual projector system that reflected 2ft lambert of brightness straight back off the dome of 45% reflectivity, while projecting white at full power. The successful solution required more than 10 million unique pixels on the dome and less than or equal to three average arc minutes per pixel, as well as a native contrast ratio of 2,000:1 and brightness at 5,000 Lux per projector.

The installed solution for the 16m, 120-seat planetarium features an Astro-Tec Ulteria Seam Dome, onto which Digital Projection’s INSIGHT Dual Laser 4K projectors deliver real-time rendering and full-dome videos, custom-created for the planetarium, using Uniview software and ColorSpace Theatre Control.

“We have been using Uniview in our portable planetarium since 2006,” explained planetarium manager, Sally Brummel. “While preparing for the selection of our new planetarium system, we researched all options and decided that Sciss was the best fit for our new facility.”

Sciss project director, Paul Tetu, added: “Digital Projection’s 4K laser offering was the right choice because the customer was very interested in reduced operational costs. We did our research, saw demos, ran some in-house tests, and felt comfortable with Digital Projection. We were able to convey this trust to our customer.”

The difference between the image quality of the offered solutions was stark. “Every time I’d seen demonstrations of laser projectors at conferences, I was astonished by how much better the image was than the lamp-based projectors,” commented Brummel. “The form seemed so much richer in colour in comparison. The laser system was our preference because of its superior image quality and long-lasting light source. The final visual aspect is very impressive and the image is as rich and bright as I’ve expected.”

The installation itself was very straightforward, according to Tetu, who was delighted to be able to introduce further cost savings to the customer. Due to the Digital Production INSIGHT Dual Laser 4K projection solution’s ability to drive a 4K 60p signal over a single cable, where other models require two or even four cables to support the same signal, a significant cost reduction associated with extenders and cables was applied.

“We were very pleased with the end result,” concluded Tetu. “The image is great and the projector is quieter than expected. When we were in touch with Digital Projection through different phases of the project, we found them to be supportive and our experience with the company and this projector was positive. So much so, we are already including this projector in offers to other potential customers.”