Kamis, 11 Maret 2010

Spectacular Images of Solar Corona

An extraordinary image is a montage, digitally stitched together from 38 photos taken on the Marshall Islands in July 2009 by veteran eclipse hunter Miloslav Druckmuller.
That was images of solar corona which formed as flaming ball of hydrogen and helium gas, at 865,000 miles across, is 100 times wider than the Earth, with a million times its volume. Powered by nuclear reactions in its core, it is the most majestic object in our skies.
A corona itself a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph. The Latin root of the word corona means crown (Wikipedia)
It's called a corona and can't normally be seen because of the brightness of the Sun, a broiling sea of hydrogen gas at 10,000c. But during a solar eclipse, the Moon blocks out the Sun and the corona is spectacularly revealed.


As well as being very hot, the ionised gas of the corona (called plasma) has a superthin consistency. It is less than a billionth of the density of the hydrogen that makes up the main ball of the Sun
This picture was created from 38 individual photographs at ISO 100, exposure time was between 1/125 seconds and 8 seconds
A photo montage captured during a solar eclipse over the Marshall Islands in July 2009. The beautiful image shows the solar corona that makes up the sun's 'atmosphere' in amazing detail as the sun passes behind the Moon
This was the view from the Marshall Islands for Mr Druckmuller where the pictures were taken. He has travelled the world chasing eclipsesSource: dailymail.co.uk

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