DO NOT TRY THIS AT HOME.
I dont claim for a second this is a safe thing to do…so its better if your very careful before trying it.
The result is my friend & i….Chris Cherry. Setting camera on tripods. 10 sec delay. One of us holding umbrella & the other spinning wire wool above & behind…so the sparks cascade over the umbrella.
15 second exposure. Taken at Cramond, Edinburgh, Scotland.
Focal Length 50mm
Shutter speed 15 secs