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Joined: Jul 2008
Posts: 10,000
Awesome Wiki Master
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Awesome Wiki Master
Joined: Jul 2008
Posts: 10,000 |
Astronauts aboard the International Space Station are treated to a spectacular view of cities on Earth lit up at night. But the relative speed of the space station meant any photos taken at night were blurred. In late 2002 and early 2003, however, astronaut Don Pettit, part of Expedition 6, constructed a device called a barn-door tracker using spare parts from around the space station. This moves the camera to compensate for the movement of the Space Station relative to the Earth below, resulting in clearer images. Since then, a few other crew members have mastered night photography. In late 2007 to early 2008, Expedition 16 Flight Engineer Dan Tani took images of cities with a longer, 400 mm lens. City lights provide sharp boundaries that delineate the densest concentrations of people, allowing us to assess the effect of urbanisation on the Earth’s ecosystems. Transport corridors and major commercial developments jump out. London at night Athens, Greece Riyadh, Saudi Arabia Seoul, South Korea Los Angeles, California More here
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Joined: Nov 2003
Posts: 12,002
Wiki Master
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Wiki Master
Joined: Nov 2003
Posts: 12,002 |
Cool pics I like the light pollution explanation that comes with the pic of Tokyo... Most Japanese cities glow blue-green, rather than the orange seen elsewhere. Newer developments along the shore of Tokyo Bay use orange sodium vapour lamps, while the majority of the urban area has light green mercury vapour lamps.
What If There Were No Hypothetical Questions?
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Joined: Aug 2007
Posts: 2,990
Are you SoNutz? Forum Master
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Are you SoNutz? Forum Master
Joined: Aug 2007
Posts: 2,990 |
Love the california one it looks like a huge Printed Circuit Board or (PCB)
Lee Mills
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Pinzgauer
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Pinzgauer
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Looks like the middle of the Sahara is one of the few places there isn't any light pollution !!
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Joined: Aug 2007
Posts: 2,990
Are you SoNutz? Forum Master
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Are you SoNutz? Forum Master
Joined: Aug 2007
Posts: 2,990 |
bloody hell the uk LOL lots of light pollution.. No wonder we dont see the stars properly..
Lee Mills
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Joined: Jun 2009
Posts: 1,024
Forum Guide
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Forum Guide
Joined: Jun 2009
Posts: 1,024 |
Noticed one thing on the World one ,the whole of the world is in darkness just the lights showing,not possible.
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