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Photographer's Note

this bright aurora was part of a violent solar storm in october 2003.
During solar eruptions the sun gives off high energy charged particles calles ions. They travel out into space at speeds of 300 to 1200 km per second. A cloud of such particles is called plasma. The stream of plasma coming from the sun is known as the solar wind. As the solar wind interacts with the edge of the earth's magnetic field, some of the particles are trapped by it and they follow the lines of the magnetic force down into the ionosphere, the section of the earth's atmosphere that extends from about 60 to 600 km above the earth's surface. When the particles collide with the gases in the ionosphere they start to glow, producing the spectacle that we know as the auroras, northern and southern. The array of colors consists of red, green, blue and violet.
This was a first experiment with a digital camera. It was set on manual, I timed the exposures at between 8 to 12 secs. This aurora was unusually bright and covered the entire sky visible from the beach at the lake (see pics of Penny's Lake). At times it was so bright we just sat there in awe and watched- I forgot to take pics!!!! The white specks are not noise- they are stars. The pic does not do the display justice but to me it was a unique experience.
check out the workshop, I put the shot through Neat Image....

berek, annagrace, plimrn has marked this note useful

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Additional Photos by Marialuisa Wittlin (Marlis) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 326 W: 50 N: 321] (2298)
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