Now it looks much better.
Bob Hughes wrote:
> ... As I understand it comets can be quite large objects overall.
Yes, indeed they can be hundred of times the earth radius.
> ... At the same time I need to get a curvature for the dust tail too.
At the scale of your images I don't think that a curvature would be
noticeable. It also depends on the viewing angle and the vector velocity
of the comet.
Alberto.
