This is an exposure, using a Solar Can, from 1st January 2022 to 22nd June 2022. I scanned the photographic paper from inside the Solar Scan, inverted the image in Lightroom, and made a black and white conversion in Silver Efex Pro. 

The 'kink' in the solar trails is because the can crumpled slightly on installation, and this meant the photographic paper inside deformed slightly.

Getting the Solar Can from the roof when there is a nesting seagull up there is a slight safety hazard, as the mother (and a flock that came out of nowhere) spent the whole time dive-bombing me!

An interesting experiment...