《欧洲39米极大望远镜5月将举行奠基仪式》

  • 来源专题:天文仪器与技术信息
  • 编译者: zwg@niaot.ac.cn
  • 发布时间:2017-04-10
  • Media representatives are invited to attend the first stone ceremony of the Extremely Large Telescope (ELT) on Friday 26 May 2017 on Cerro Armazones, a 3046-metre peak in northern Chile about 20 kilometres from ESO’s Paranal Observatory. The ceremony will begin at 13:30 local time and is expected to finish around 15:30, and will also mark the connection of the observatory to the power grid. The first stone will be laid by the President of the Republic of Chile, Her Excellency Michelle Bachelet Jeria.

    Media will have the opportunity not only to visit the spectacular site, but also to arrange interviews with senior figures both from the Chilean authorities and industrial contractors and with the scientists and engineers involved in building the giant telescope.

    The ELT is a revolutionary new ground-based telescope that will have a 39-metre main mirror — making it the largest optical-near-infrared telescope in the world. It will take on some of the biggest astronomical challenges of our time, including discovering and studying Earth-like exoplanets, observing the first stars and galaxies to explore our origins, and probing the nature of dark matter and dark energy.

    One year ago, ESO signed a contract with the ACe Consortium, consisting of Astaldi, Cimolai and the nominated sub-contractor EIE Group, for the construction of the ELT dome and telescope structure. This was the largest contract ever awarded by ESO and also the largest contract ever in ground-based astronomy.

    The ELT is just the latest of many ESO projects that have benefited greatly from the continuing support of the Government of the Host State of Chile over more than half a century. The strong support of the Ministry of Foreign Affairs, the Ministry of Energy (Minenenergia) and the National Commission for Energy (CNE) has recently been vital in establishing the successful connection of the site to the power grid. The ELT site was donated by the Government of Chile, and is surrounded by a further large concession of land to protect the future operations of the telescope from interference of all kinds.

    Construction work on the ELT site began in June 2014, and now that the access road and leveling of the summit have been completed, work on the dome itself can now begin. The ELT is targeted to see first light in 2024.

    To participate in the ceremony, bona fide members of the media should sign up here, and make their own travel arrangements to arrive at Antofagasta airport on the morning of 26 May.

    More Information

    ESO is the foremost intergovernmental astronomy organisation in Europe and the world’s most productive ground-based astronomical observatory by far. It is supported by 16 countries: Austria, Belgium, Brazil, the Czech Republic, Denmark, France, Finland, Germany, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland and the United Kingdom, along with the host state of Chile. ESO carries out an ambitious programme focused on the design, construction and operation of powerful ground-based observing facilities enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astronomical research. ESO operates three unique world-class observing sites in Chile: La Silla, Paranal and Chajnantor. At Paranal, ESO operates the Very Large Telescope, the world’s most advanced visible-light astronomical observatory and two survey telescopes. VISTA works in the infrared and is the world’s largest survey telescope and the VLT Survey Telescope is the largest telescope designed to exclusively survey the skies in visible light. ESO is a major partner in ALMA, the largest astronomical project in existence. And on Cerro Armazones, close to Paranal, ESO is building the 39-metre Extremely Large Telescope, the ELT, which will become “the world’s biggest eye on the sky”.

  • 原文来源:http://www.eso.org/public/announcements/ann17017/
相关报告
  • 《欧洲39米极大望远镜经费预算大幅增加》

    • 来源专题:天文仪器与技术信息
    • 编译者:zwg@niaot.ac.cn
    • 发布时间:2020-12-23
    • “Council’s decision means ESO has the funds to build an ambitious and extremely powerful science machine, fully integrated with ESO’s Paranal Observatory, that meets the longer-term aspirations of the astronomy community,” says ESO Director General Xavier Barcons. Overall, 80% of the ELT’s budget is being invested in contracts with industry in ESO member states and in Chile. The funding boost will strengthen the scientific capabilities of the under-construction telescope, bringing them in line with those envisioned in the original ELT programme approved by Council in 2012. Two years later, ESO Council gave green light for ELT construction but stipulated that it should occur in two phases, with funding only committed for a fully working but less-powerful ‘Phase 1 ELT’. The revised budget includes the procurement of components originally deferred to the second phase of the project, such as the telescope’s second prefocal station, two more laser guide star systems, a set of astronomy-relevant atmospheric monitoring equipment and a small technical building at Armazones to optimise operations and maintenance activities. The new budget incorporates the impact on cost and schedule of known technical risks and includes the cost of activities needed to bring the ELT into operation as part of ESO’s Paranal Observatory. The funding boost follows an ELT total cost exercise that started in 2019. The exercise is an example of ESO’s continuous monitoring of the project and dedication to delivering a pioneering telescope that will tackle the biggest astronomical challenges of our time and make yet unimaginable discoveries. A truly international endeavour, this ambitious and exciting ESO project is made possible thanks to the organisation’s staff and governing bodies, the astronomy community, industry and scientific institutions in member states, as well as to the host state of Chile.
  • 《欧洲39米极大望远镜景观》

    • 来源专题:天文仪器与技术信息
    • 编译者:zwg@niaot.ac.cn
    • 发布时间:2020-11-27
    • While the construction of ESO's Extremely Large Telescope (ELT) in Chile's Atacama Desert is on hold due to the COVID-19 pandemic, important progress on the project is being made elsewhere. In the past few months, design activities for the telescope’s dome have been completed (in a process called final design review) and manufacturing of the dome components is currently ongoing. The extensive design review solved several complex problems inherent to building a top-performing science machine, with strict scientific requirements, in the extreme environment of the Atacama Desert. Engineers also had to ensure the operational requirements were met: high reliability, low maintenance, and resistance to earthquake and strong winds, for example. The latest renderings show what the dome will look like, and how subtle but important changes were made from the older designs. The ELT dome and telescope structure contract was placed with the Italian consortium ACe (Cimolai, Astaldi). It covers not only the design, but also the manufacture, transport, construction, on-site assembly and verification of the dome and telescope structure. The company is currently working on finalising the design for the telescope structure, with the final design review anticipated to happen in the first quarter of 2021. ACe is also manufacturing key hardware components for the dome that will protect the ELT. As part of the design process, ACe manufactured and extensively tested several critical components to qualify the design as well as the manufacturing and assembly procedures. This included prototyping and manufacturing the seismic isolation systems and testing a full-scale dome ventilation louver. It also involved testing the performance of the dome cladding panels, including a trial installation on a 10m-high partial dome structure, manufacturing the full set of dome rotation trolleys (36 units in total, each weighting 27 tons) and manufacturing the structural components for the first bottom ring of the dome lattice structure. Some of those components have already been shipped to Chile. ESO's ELT, with a main mirror 39.3 metres in diameter, will be by far the largest optical/near-infrared telescope in the world once it sees first light later this decade. When completed, the ELT dome and telescope structure will dwarf other similar constructions around the world. The telescope structure, weighing some 3700 tonnes, will be equipped with the five telescope mirrors, which will collect and direct the light from astronomical targets to the various instruments. The instruments themselves will be placed in two platforms, about the size of a tennis court each, located on either side of the telescope structure. The giant ELT dome will house all of these structures, protecting them from the desert elements. The dome will be about 80 metres high and have a diameter of about 88 metres, giving it a footprint roughly equivalent to a football pitch. The upper part of the dome structure, out of steel and weighing about 6100 tonnes, will rotate on top of the concrete cylindrical base of the dome, to allow the telescope to point in any direction through its large observing slit. ESO’s ELT will apply its unique angular resolution to answer the biggest astronomical questions of our time, exploring the past and present of the universe, the locations and compositions of exoplanets, and the nature of dark matter and dark energy.