In this video, the judges of the Insight Astronomy Photographer of the Year competition explain what makes the perfect astrophoto.
The winners of the competition’s nine categories and two special prizes will be announced on Thursday 15th September at a special award ceremony at the Royal Observatory Greenwich.
A free exhibition featuring the winning images will open at the Observatory’s Astronomy Centre on Saturday 17 September.
A record number of more than 4500 entries were received from astrophotographers in over 80 countries. See some of the 2016 shortlisted images.
See tips on getting started in astrophotography from the Astronomy Photographer of the Year judges.