Great article! Thanks for sharing your research into the history of these super interesting theaters and projection systems.

There is something I've wondered about though:

> While far from inexpensive, digital projection systems are now able to match the quality of Omnimax projection.

Are they really? The St Louis Science Center Omnimax was switched from the 70mm film system to "laser 4k" digital projection in 2019. I've only been to one show but it didn't seem particularly sharp, with large clearly visible pixels. It was very bright, with high contrast, though.

4k seems like a pretty low resolution for such a large screen?