This image is a light painting created by throwing and catching a color-cycling LED frisbee in complete darkness. The disc's continuous color shift as it moved through the air produced those layered rainbow bands; each arc represents a different pass of the disc across the frame.
Shot on a Nikon Z6III with a Nikkor Z 28-400mm f/4-8 at 34mm on a tripod, with a 30-second exposure at f/8, ISO 100. The long shutter gave the disc enough time to make multiple sweeps through the frame, building up the looping, ribbon-like trails you see against the pure black background.
The biggest challenge was surprisingly not technical. It was throwing and catching a glowing disc right next to a camera, without standing still in front of the lens and without tripping over the tripod. To make matters worse, every time you look at the frisbee, say to catch it, you lose all your night vision and forget where the person you are playing catch with went.