Tuesday, August 7, 2007

Where the sun never sets

sun in sky

Click on the image to get a bigger picture

The above picture is a mosaic of a number of pictures taken at 1 hour intervals over a period of 24 hours. The picture shows the trajectory of the sun over the Concordia Research Station located at place called Dome C on the Antarctic Plateau, Antarctica. This explains why the sun is visible on the sky on each of the 24 shots, for this is Antarctica and it's summer time. The pictures were taken by a wide angle camera at precisely 1 hour intervals, each time the camera turned towards the sun but keeping the horizon in the middle of the frame. The Concordia Research Station, which is visible in the image, is a research facility 1670 kilometers away from the geographic South Pole. Had this pictures been taken from exactly the South Pole, the sun would have remained horizontal in the sky.

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