This is my first try with bulb ramping.
First shot was taken 1/15 sec at ISO 100. Last image was: 5 sec at ISO 3200
I’ve installed the Magic Lantern Firmware on my Canon T3i. Bulb ramping is done by Magic Lantern.
Photos de-flickered with LRTimelapse
Zoom and Pan in post.
Upward pan done by hand at 0:18 and 0:40