He was the recipient of a grant from the Museum of Non-Objective Painting, which later became the Guggenheim (Oskar Fischinger recommended him to the MoNOP curator Hilla von Rebay).
In 1957 he began a collaboration with sound artist Henry Jacobs at the Morrison Planetarium in San Francisco, California that lasted until 1959.
Not just an opportunity to develop new visual technologies and techniques, the sound system in the planetarium enabled Belson and Jacobs to create an immersive environment where imagery could move throughout the entire screen space, and sound could move around the perimeter of the room.
His last film Epilogue was commissioned for the Visual Music exhibition at the Hirshhorn/Smithsonian and completed in 2005.
Belson died of heart failure at his home in San Francisco on September 6, 2011.