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article imageTime-lapse video captures 3 years of Sweden's northern lights

By JohnThomas Didymus     Jun 25, 2012 in Environment
A new time-lapse video that captures the northern lights of Sweden has been posted online by aurora photographer Chad Blakley, who spent three winter seasons capturing views of the lights from Abisko National Park in the Swedish province of Lapland.
Blakley put together several scenes made up of thousands of individual images into a stunning time-lapse video. The 14-minute video titled "Lights Over Lapland" shows beautiful auroras with varieties of colors, including green blue and purple unfolding in succession across the northern skies.
Blakley told Space.com: "By my calculation I have spent no less than 2,000 hours pointing my camera at the sky recording the northern lights to create this film."
He explained that he used a special time-lapse photography technique to create the video: "The video was created using DSLR cameras and a time-lapse technique that required thousands of images and hundreds of hours to produce. The opportunity to spend so much time in such an incredible environment capturing this phenomenon has been one of the most amazing experiences of my life... Depending on the length of the film I usually shoot anywhere from 400 to 2,000 images over the course of the night and then compress them into a useable sequence. I feel extremely lucky to live in a place that allows me to see the auroras so often."
Digital Journal reports that Auroras are natural light display in the sky that occur mostly in the high latitude regions of the Arctic and Antarctic and are caused by the collision of energetic charged particles with atoms in the high altitude atmosphere called the thermosphere. The charged particles are believed to originate in the magnetosphere and solar wind and are directed by the Earth's magnetic field into the atmosphere.
According to Space.com, the northern lights are called aurora borealis while the southern lights are called aurora australis
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