I wonder a displaying overlay for tracking spacecrafts and moons would be a useful feature, like this:
![Image](http://www.provr.fsnet.co.uk/track_overlay20060824.jpg)
selden wrote:Remember that Celestia is optimized for 3D realtime, rather than 2D with memory. They're quite different requirements.
selden wrote:I think a substantially different new orbit path drawing routine would have to be written: one that draws lines at the radius of the parent body's surface in realtime (rather than calculating the path once in advance as it is now) and which limits the total length of the path to three orbits; or, better, to the value of some parameter specified in the config file.