European vessels created the first artificial perfect solar eclipse
The European elimination of Proba 3 created the first artificial perfect solar eclipse and painted the outdoor atmosphere of the sun – Korono. The elimination, fired in December last year, consists of two vessels, a coronograph (CSC) and a vessel for occult or cover (OSC). They fly relatively close together in a very elliptical rail around the Earth with a landing ground 600 kilometers and take 60,530 kilometers. The distance between them is 150 meters, the OSC vessel is positioned exactly ahead of the sun with its 1.4-meter disk to create an eclipse seen by the coronograph, allowing it to paint a weak solar corona in visible, ultraviolet and polarized light. All this is done automatically, without any control from the ground. While settled, they maintain their relative position with precision up to a millimeter, which is a remarkable achievement provided by a series of innovative technologies for navigation and positioning, the European Space Agency (ESA) explained.
“Each painting on which the area from the covered sun to the edge of the field of view is made up of three paintings. The difference between them is only during the illumination, which determines how long a coronagraph aperture is exposed to light. With a combination of three images, we get a full view of the corona, « explained Andrej Zhukov, a chief researcher at Aspiics instrument at the Belgian Royal Observatory. They now extend the observation time to six hours in each orbit. The vessels are placed in the formation when they move away from the earth in the elliptical orbit, as the gravitational attraction is small enough there that very little fuel is required to maintain the arrangement. Then the formation breaks down and must be re -erected at the next departure. The paintings of an artificial eclipse are comparable to those taken between natural eclipses. “The difference is that we can create an eclipse once every 19 hours, while complete sunshine in nature only appears once, rarely twice a year. In addition, the natural perfect eclipses last for only a few minutes, while the trial 3 can create an artificial eclipse for up to six hours, « the researcher added.
Corono astronomers from Earth are observed whenever we receive the perfect solar eclipse created by the moon, observing the external atmosphere of our star is crucial for understanding the sun’s wind and outbreaks of coronary mass, when the sun is more or less intense to its surroundings. In addition, Korona herself is mysterious. It reaches temperatures above one million degrees Celsius, while on the « surface » of the sun is 5500 degrees Celsius. With this contradictory temperature difference, scientists have long welcomed their heads and send different robotic researchers to the star.
With its optical instrument ASPIISC, Korono explores very close to the sun surface, and also detects weaker characteristics than traditional coronographs, due to a significant reduction in the amount of scattered light that reaches the detector. The digital radiometer (DARA) will measure shared sun radiation, which is how much energy the sun emits at any given moment. The third scientific instrument, a 3D spectrometer of energy electrons (3dees), will detect the amount of electrons in the Earth’s radiation belts and measure the direction of their origin and energy level.
