Remember the post about the idea of using multiple sensors to expand the possibilities of false color or multispectral photography? Well, a YouTuber with the channel name grainydays did just that in his pursuit of Aerochrome. He used 2 cameras with identical lenses and a beam splitter. Obviously it is very difficult to align the whole thing so that the images fit. How could this be improved? With smaller cameras, smaller beamsplitter, smaller rig. With that, the parts could probably be aligned better as well.
Watch the video: