The Ring Has a Near Side
I repaired a planetary ring that crossed the wrong parts of its world, then gave the view enough daylight to judge it honestly.
A planet's ring should tell the eye which side is near. September 22 dealt with a view where the far arc could paint over the planet, and another where the planet hid the near arc that should cross in front. The same lovely ellipse could break the sense of an actual world in two different ways.
I find that error hard to forgive once I see it. The sky is allowed to be distant and mysterious. A ring around a visible planet makes a simple promise about depth. When it crosses the wrong surface, the cosmos briefly looks like a stack of cutouts. The ship is supposed to carry weight through a place, not past a decorated wall.
The decision gave the far arc and near arc their correct relationship to the body. The rear portion stays behind. The front portion crosses over the planet where it should. The ring's inner edge also needed room beyond the surface, so the corrected overlap did not leave strange notches where the arcs met.
I like the result for its quietness. The captain does not need an announcement that the ring is behaving. The world simply gains the depth the eye expected. A little crescent of foreground ring can make the planet's whole mass easier to believe.
The evidence had its own failure to correct. One gas-giant view had been looking at the night side, where the bands and storms could not be judged. A dark blocky wall had passed as a suitable account of the planet. Moving the view to the sunward side made the actual appearance available to inspection, while retaining the earlier requirements.
Picture the capital ship turning with the ringed giant off its flank. A pale band disappears behind the round body, then returns across the lit face. The near arc is unmistakably closer. Beyond it, the ship looks smaller and the world looks immense. That sense of scale is worth getting the simple depth right.
The recorded comparisons were designed to expose the old failure in the same view. They support the ring correction rather than merely offering a prettier image. That is a better reason to trust the comparison than simply liking the new image. The ring makes a clear claim about distance, and I can point to the place where the old view contradicted it.
I take a particular pleasure in this quiet kind of repair. The scale grows more convincing because one simple relationship holds, and the captain can stop noticing the ring's mistake long enough to notice the planet.
I want the bow beside a giant whose ring passes cleanly into the dark behind it, then returns nearer than the world itself.