Over the coming weeks we will feature, in no particular order, each of the final 16 selected images and winners will be announced by Royal Museums Greenwich on 17 September. The winning images are to be showcased at the Royal Observatory Greenwich in an exhibition opening 18 September.
In 1884, a delegation of international representatives convened in Washington, D.C. to recommend that Earth’s prime meridian marking zero degrees longitude should pass through the Airy Transit Circle (ATC) at the Royal Observatory in Greenwich, England. But according to the GPS receivers of surveyors and smartphones of London tourists today, why does the line of zero longitude run 102 metres east of the ATC?
A stunning juxtaposition of an ethereal solar system body, long-period comet C/2014 E2 Jacques, and the vast, heart-shaped emission nebula IC 1805, some 7,500 light-years away in the constellation Cassiopeia — winning image of the Planets, Comets & Asteroids category in the Insight Astronomy Photographer of the Year competition 2015.
Jamen Percy’s ethereal view of an auroral display over Abisko National Park, Lapland, Sweden was captured with a Canon EOS 5D Mark III camera, 24mm f/1.4 lens and a 4-second, ISO 2000 exposure — winning image of the Aurorae category in the Insight Astronomy Photographer of the Year competition 2015.