Celestia's window fills with a translucent yellow "glare" when the viewpoint is between about 7 and 70 au from the Sun.
This effect is seen when all of the following are true:
rendering of Orbit paths is selected
using Render paths Basic or Multitexture
using a Lua ScriptedOrbit function
running Celestia v1.5.0pre4 or built from cvs today.
This effect is *not* seen when any one of the following is true:
orbit rendering is not selected
in render paths which use vertex shaders
no lua ScriptedOrbit functions are used
running Celestia v1.5.0pre3
An addon demonstrating this problem is available at