Star Trails with different effects

Started playing with star trails on the DSLR, this included a bit of light pollution, but was able to clean it up.
Playing in after effects with a few expressions, was able to adjust the blending mode and delay between frames to alter the length of the star trails creating some interesting effects.
7 November, 2020
Hardware:
Canon 5DM4
24-70L at 24 mm f2.8
CooWoo dew heater
90 second exposures
132 frames
3 h 10 m total exposure time