Post by Andrei Tchentchik on Aug 20, 2020 18:25:11 GMT 2
(.#483).- The surface of the Sun as you have never seen it ! Feb. 1, 2020.
The surface of the Sun as you have never seen it ! Jan. 30, 2020.
Rémy Decourt Journalist.
The Daniel K. Inouye terrestrial solar telescope has just acquired its first images of the Sun. They are quite simply the most precise and finest of the surface of the Sun ever obtained. This unprecedented ability to observe the Sun promises a spectacular leap in knowledge of the phenomena at the origin of its activity which influences space weather.
While the European Space Agency and NASA are preparing to launch the Solar Orbiter probe in a few days and the American Parker Solar Probe has approached only 19 million kilometers from the Sun, it is a telescope terrestrial solar that makes the 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 images and they are the most precise ever recorded from the surface of the Sun. The smallest details that can be discerned are only 30 kilometers in size! Which, on the scale of the Sun, a star that is nearly 1.4 million kilometers in diameter, is microscopic.
The most detailed images ever seen of the Sun’s surface. They were acquired by the Daniel K. Inouye Solar Telescope (DKIST) terrestrial telescope during its first lights. © NSO / AURA / NSF
Convection cells in perpetual motion
What we see are the convection cells that make up the surface of the Sun. They measure more or less 1,000 kilometers in diameter and are constantly evolving. They deform, appear and disappear with the movements which occur under the surface of the Sun and which lead the hottest gas to rise from the interior of the star on the surface.
VIDEO YOUTUBE :
The DKIST terrestrial solar telescope reveals unprecedented details of our Sun. © NSO, YouTube
The Sun is our closest star, a gigantic nuclear reactor that burns about five million tonnes of hydrogen fuel every second. It has been doing this for about 5 billion years and will continue to do so for the other 4.5 billion years of its remaining life. All of this energy radiates through space in all directions, and the tiny fraction that strikes Earth makes life possible.
Built on Haleakala Mountain on the island of Maui in Hawaii, DKIST is the largest solar telescope in the world capable of acquiring ultra detailed images of the surface of the Sun, and this with a resolution twice as high as the other observatories. solar panels in service. Until today, solar telescopes have had mirrors up to 1.50 meters in diameter. This off-axis telescope is equipped with an active primary mirror of 4.2 meters in diameter, 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, mainly its magnetic field, in space weather.
F I N .
The surface of the Sun as you have never seen it ! Jan. 30, 2020.
Rémy Decourt Journalist.
The Daniel K. Inouye terrestrial solar telescope has just acquired its first images of the Sun. They are quite simply the most precise and finest of the surface of the Sun ever obtained. This unprecedented ability to observe the Sun promises a spectacular leap in knowledge of the phenomena at the origin of its activity which influences space weather.
While the European Space Agency and NASA are preparing to launch the Solar Orbiter probe in a few days and the American Parker Solar Probe has approached only 19 million kilometers from the Sun, it is a telescope terrestrial solar that makes the 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 images and they are the most precise ever recorded from the surface of the Sun. The smallest details that can be discerned are only 30 kilometers in size! Which, on the scale of the Sun, a star that is nearly 1.4 million kilometers in diameter, is microscopic.
The most detailed images ever seen of the Sun’s surface. They were acquired by the Daniel K. Inouye Solar Telescope (DKIST) terrestrial telescope during its first lights. © NSO / AURA / NSF
Convection cells in perpetual motion
What we see are the convection cells that make up the surface of the Sun. They measure more or less 1,000 kilometers in diameter and are constantly evolving. They deform, appear and disappear with the movements which occur under the surface of the Sun and which lead the hottest gas to rise from the interior of the star on the surface.
VIDEO YOUTUBE :
The DKIST terrestrial solar telescope reveals unprecedented details of our Sun. © NSO, YouTube
The Sun is our closest star, a gigantic nuclear reactor that burns about five million tonnes of hydrogen fuel every second. It has been doing this for about 5 billion years and will continue to do so for the other 4.5 billion years of its remaining life. All of this energy radiates through space in all directions, and the tiny fraction that strikes Earth makes life possible.
Built on Haleakala Mountain on the island of Maui in Hawaii, DKIST is the largest solar telescope in the world capable of acquiring ultra detailed images of the surface of the Sun, and this with a resolution twice as high as the other observatories. solar panels in service. Until today, solar telescopes have had mirrors up to 1.50 meters in diameter. This off-axis telescope is equipped with an active primary mirror of 4.2 meters in diameter, 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, mainly its magnetic field, in space weather.
F I N .
