Meteor Shower - Houdini pyro rendered with Karma

Meteor shower I created following a tutorial.

Made using an asteroid modelled out of a sphere in Houdini. Pyro emitted from the blasted polys from the sphere. Clouds are very simple.

Rendered with Karma renderer in Houdini

Final render. Colour grade and camera shake added in DaVinci Resolve

Test of meteorites.

Test with masking and substep issues.