The air-conditioning of the telescope during the day is critical and the current specifications permit the dome to cool the telescope and internal volume by 10 °C over 12 hours. Les deux portes dégagent une ouverture de 45,3 mètres de large.
La couverture du dôme est constituée en allant de l'extérieur vers l'intérieur parLe télescope est conçu pour mettre en œuvre sept instruments. This pair of doors has a total width of 45.3 m.
The telescope and dome will also be able to change positions on the sky and start a new observation in a very short time. A number of concepts for the dome were evaluated. This compilation features footage from a ceremony marking the first stone of the ELT. With up to 8000 actuators, the surface can be readjusted at very high time frequencies.The ELT dome will have a height of nearly 74 metres from the ground and a diameter of 86 metres, making it the largest dome ever built for a telescope.
With such a large opening, the ELT dome requires the presence of a windscreen to protect the telescope's mirrors (apart from the secondary), from direct exposure to the wind. A 3D view of the new road to Cerro Armazones area in the Chilean desert. One was awarded to The other contract was awarded to the French company, Safran Reosc,The segment support system units for the primary mirror are designed and produced by CESA (Spain)Making the secondary mirror is a major challenge as it is highly convex, and aspheric. Merci pour ton travail de « francisation » des titres des articles « astronomiques ». The ELT will search for extrasolar planets – planets orbiting other stars. En décembre 2004, le Conseil de l'ESO décide de compléter rapidement les études en cours en s'appuyant largement sur son expertise interne mais également sur l'avis des industriels et de la commu… In addition, the ELT will be a unique tool for making an inventory of the changing content of the various elements in the Universe with time, and to understand star formation history in galaxies.One of the goals of the ELT is the possibility of making a direct measurement of the acceleration of the Universe's expansion. L’appareil […]
Most current large telescopes, including the VLT and the NASA/ESA Hubble Space Telescope, use just two curved mirrors to form an image. The ELT is intended to advance astrophysical knowledge by enabling detailed studies of planets around other stars, the first galaxies in the Universe, supermassive black holes, and the nature of the Universe's dark sector, and to detect water and organic molecules in On 11 June 2012, the ESO Council approved the ELT programme's plans to begin civil works at the telescope site, with construction of the telescope itself pending final agreement with governments of some member states.Early designs included a segmented primary mirror with a diameter of 42 metres (140 feet) and an area of about 1,300 mESO's Director General commented in a 2011 press release that "With the new E-ELT design we can still satisfy the bold science goals and also ensure that the construction can be completed in only 10–11 years. The ELT will also search for possible variations in the fundamental physical constants with time. This will include not only the discovery of planets down to Earth-like masses through indirect measurements of the wobbling motion of stars perturbed by the planets that orbit them, but also the direct imaging of larger planets and possibly even the characterisation of their atmospheres.Furthermore, the ELT's suite of instruments will allow astronomers to probe the earliest stages of the formation of planetary systems and to detect water and organic molecules in protoplanetary discs around stars in the making. Prototype du futur miroir déformable M4 de l'E-ELT.
From the variety of instrument concepts studied, three instruments are under construction; MICADO, HARMONI and METIS, along with the adaptive optics system MAORY. Et j'ai trouvé (voir ici) que « Télescope européen extrêmement grand » était (aussi) usité, n… Artist's impression of the Extremely Large Telescope (ELT) in its enclosure on Cerro Armazones during night-time observations.
Comme je trouve « Extrêmement grand télescope européen » pas très « beau », j'ai cherché si « European Extremely Large Telescope » n'était pas parfois « traduit » par « Télescope européen extrêmement grand » que je trouve plus « joli » (je ne sais pas si c'est plus « correct » que « Extrêmement grand télescope européen »).
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