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Satellite


MichaelChang

Can one image an object something the size of a car, 35,000 kM away without a telephoto lens? Here's proof you can. This photo shows 3 geostationary satellites and clusters of stars shot with a digicam at minimum zoom, cropped from an original (2240x1680) to 514x514. This is a composite of 12 images, each exposed for 8 seconds @f2.8 then overlaid to aligned the stars - one would see a classic star trail if the exposures weren't aligned. We can deduce that the streaks aren't airplanes because airplanes flying precisely at altitude in a geostationary path is impossible, and we know the satellites are geostationary because they follow an identical path and duration as an unaligned star trail. The satellite reflection from the sun is just barely one pixel wide on a 3.3MP camera.


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