WIP: Tighten up the Kuiper belt
I'm working on a system map for a new "The Expanse" game I'm running online. I made the Kuiper Belt by adding a sheet, putting a large gray circle on it, and adding a large outer glow effect.
I masked the inner part of the glow with another sheet containing a masking circle.
My question is this. How can I get rid of the actual gray line from which the Kuiper Belt glow propagates? It can be seen as a thin gray line on the inner circumference of the Kuiper Belt area, just outside Neptune's orbit.