What does it take to be an award-winning astrophotographer? We went on location with three of this year's winners to find out.

This short film is an interview with Ole C. Salomonsen, from Tromsø, Norway. Ole was runner-up in the Earth & Space category of the Astronomy Photographer of the Year competition 2011.

nmm.ac.uk/astrophoto
flickr.com/groups/astrophoto

Credit as 'Royal Observatory Greenwich/ Lonelyleap, incorporating time-lapse footage of aurorae by Ole C. Salomonsen'

Ole's own film, In The Land Of The Northern Lights, is available on Vimeo, vimeo.com/21419634

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