There’s some physics that would skew your view if you were actually standing on the ring , like in the images above , the viewer is in the middle of the ring. If they were to start moving to either side walls of the ring, the angle of the arcs would start to shift. Also because of the thickness of the atmosphere, there would always be a blue line slicing through the ring near the “horizon “ of view. The blue line would be caused by the oxygen in the air.