This is a solargraph. It shows the path taken by the sun as it travelled across the sky above the Clifton Suspension Bridge in Bristol, UK, between 19 December 2007 and 21 June 2008 (between the winter and summer solstices). It was taken in a single six-month exposure by photographer Justin Quinnell, using a pinhole camera strapped to a telephone mast.

This solargraph was taken by a camera nestled behind three gravestones. The dotted lines of light are the result of overcast days when the sun struggled to penetrate the clouds.

This solargraph shows the sun trailing over the marina in Bristol, UK. Advertisement

Quinnell has dedicated the "Slow Light" exhibition to his father, who died 116 sunrises into the project (Quinnell can point to the location of the sun in the sky at the moment he passed away), and his brother Paul who "loved the heavens so much he went to get a closer look".