Images that show the workings of the Elysium code. On the left is a run for a 7 × 7 pixels screen with j = 0.5, at an inclination 45°. On the right is the center pixels column of a 100 × 100 screen with j = 0 at inclination 85°. The solid green lines are light rays that intersect the AD and thus carry radiation. The dashed purple lines end up in the event horizon and the dotted orange ones at infinity, both without crossing any part of the AD and thus attributing nothing to the radiation total.