VO 1.8.93 includes:

- All players and NPCs are occluded from the radar by asteroids and ice.
- Occluded ships no longer show their distance in the sector list.
- Radar occlusion calculations are performed in a separate thread.
- Different asteroid types have different occlusion behaviour (ice occludes accurately, some asteroids as spheres, etc).
- Object occlusion accuracy can now be dynamically configured on the server (Sphere, Box, OBB polygon).

You can expect further tweaks to radar occlusion as we go along.