Built on the side ofon the island of Maui of Hawaii, the solar Daniel-K.-Inouye, – that of the National Science Foundation (United States) which was called beforeAdvanced technology solar telescope – is considered the intended to comply with our . And a few days ago, on the occasion of its official inauguration – it has been collecting scientific data for several months – the teams responsible for its operation have published two new breathtaking images of our Star
Their quality is all the more incredible since we are not talking about a probe sent to “burn its wings” near the Sun. But a telescope on the ground. With a4 meters, perched at about 3,000 meters above sea level and protected from the elements And atmospheric from an ocean environment.
The solar chromosphere in all its states
On the two images published during the inauguration of the Daniel-K.-Inouye solar telescope, we discover theours . Understand the bass . This layer of placed just above its visible surface.
One of the images shows whatcalled solar granulation. The phenomenon was first identified in the early 19th century.And century of . Convective cells, as researchers have known since the 1930s, each about 500-1,000 kilometers wide. And whose life is rather short. Only about ten minutes.
The other image, equally fascinating, shows a sort of streaks that are actually nothing more thanat very high temperature.
The surface of the Sun as you have never seen it!
Terrestrial solar telescope Daniel K. Inouye has just acquired the first images of the Sun. They are simply the finest and finest surface of the Sun ever. This unprecedented ability to observe the Sun promises a spectacular leap in knowledge of the phenomena at the origin of its activity that affects thespace.
Article ofpublished on 30/01/2020
While theand the they are preparing to launch the probe in a few days and that the American approached only 19 million kilometers from the Sun, it is a terrestrial solar telescope that makes news. In fact, the Daniel K. Inouye solar telescope (DKIST for Daniel K. Inouye solar telescope), whose commissioning is scheduled for this summer, has acquired its first and most accurate images of the Sun’s surface ever recorded. The smallest details that can be discerned are just 30 kilometers in size! What, on the scale of the Sun, a star that has a diameter of nearly 1.4 million kilometers, is microscopic.
Convection cells in perpetual motion
What we see are the cells ofthat make up the surface of the Sun. They measure more or less 1,000 kilometers in diameter and are constantly changing. They deform, appear and disappear according to the movements that occur under the Sun’s surface and that cause the hottest gas to rise from the inside of the star to the surface.
The DKIST terrestrial solar telescope reveals unprecedented details of our Sun. © NSO, YouTube
Built on Mount Haleakala on the island of Maui in Hawaii, the DKIST is the largest solar telescope in the world capable of capturing ultra-detailed images of the Sun’s surface, and this with atwice as many other solar observatories in service. Until now, solar telescopes had mirrors with a diameter of up to 1.50 meters. This off-axis telescope features a 4.2 meter diameter active primary mirror with thermal control and adaptive optics. DKIST is also the most complex and technical solar telescope currently in service.
This telescope was designed to better understand the role of the Sun, primarily its ownin space time.