Synchronium

Placed 18^th in the challenge.

Placed 2^nd in the challenge. 7x10min exposures

Placed 48^th in the challenge.

Placed 55^th in the challenge.

Placed 76^th in the challenge. This is a torn piece of a plastic ziplock bag placed on a computer monitor (you can see the pixels in the image). As computer monitors contain a built in polariser, shooting with my polariser aligned in the opposite direction means no light should enter the lens as the oppositely aligned filters block half of the light each. The colour in the image is produced by the polarised light being refracted from stresses in the plastic, which passes through the second filter between the subject and the lens.

Placed 12^th in the challenge.