Longest known exposure photograph ever captured using a beer can
A photograph thought to be the longest exposure image ever taken has been discovered inside a beer can at the University of Hertfordshire’s Bayfordbury Observatory.
The image was taken by Regina Valkenborgh, who began capturing it towards the end of her MA Fine Art degree at the University of Hertfordshire in 2012. It shows 2,953 arced trails of the sun, as it rose and fell between summer and winter over a period of eight years and one month. The dome of Bayfordbury’s oldest telescope is visible to the left of the photograph and the atmospheric gantry, built halfway through the exposure, can be seen from the centre to the right.
