[32] Its current director since February 2018 is Sean Dougherty.[33]. Start of Early Science Cycle 2. Ähnliche Ziele verfolgt das South Pole Telescope, das ebenfalls 2007 first light sah. (in HD). The American and European partners each provided twenty-five 12-meter diameter antennas, that compose the main array. The dazzling full moon sets behind the Very Large Telescope in Chile's Atacama Desert in this photo released June 7, 2010 by the European Southern Observatory. Das Atacama Cosmology Telescope ACT ist ein Radioteleskop zur Untersuchung des kosmischen Mikrowellenhintergrunds (CMB). Atacama Cosmology Telescope. ALMA is an international partnership among Europe, the United States, Canada, Japan, South Korea, Taiwan, and Chile. During Autumn 2009, the first three antennas were transported one-by-one to the Array Operations Site. On 30 September 2013 the final ALMA antenna was handed over to the ALMA Observatory. Video compilation showing various aspects of ALMA. [14] The first antenna was delivered in 2008, the last in 2011.[15]. One theory suggests that the faster accretion rate might be due to the complex magnetic field of the protoplanetary disk. The antennas can be moved across the desert plateau over distances from 150 m to 16 km, which will give ALMA a powerful variable "zoom", similar in its concept to that employed at the centimetre-wavelength Very Large Array (VLA) site in New Mexico, United States. The ALMA regional centre (ARC) has been designed as an interface between user communities of the major contributors of the ALMA project and the JAO. With this key step, commissioning of the instrument began 22 January 2010. The Cerro Armazones, 3,060 meters in height, situated in the Atacama desert some 130 km south of Antofagasta, Chile, was the site chosen to install the telescope largest in the world -known as European Extremely Large Telescope (E-ELT), which also aspired Spain, as reported by the Council of European Southern Observatory (IT). European, North American & Japanese draft agreement, with Japan providing new extensions to ALMA. ALMA has its conceptual roots in three astronomical projects — the Millimeter Array (MMA) of the United States, the Large Southern Array (LSA) of Europe, and the Large Millimeter Array (LMA) of Japan. The ACT Collaboration; Sherwin; Dunkley; Das; Appel; Bond; Carvalho; Devlin et al., https://de.wikipedia.org/w/index.php?title=Atacama_Cosmology_Telescope&oldid=183294618, „Creative Commons Attribution/Share Alike“. Gordon Gillet, ESO. This video clip shows the distinguished guests, including the President of Chile, Sebastián Piñera, arriving at the ALMA Operations Support Facility (OSF), located at an altitude of 2900 meters in the Atacama Desert in Chile for the inauguration of the giant telescope. ESO and NRAO worked together in technical, science, and management groups to define and organize a joint project between the two observatories with participation by Canada and Spain (the latter became a member of ESO later). The first vehicle was completed and tested in July 2007. Image of telescope in transit at the Site Erection Facility. The array has been fully operational since March 2013.[5][6]. Japan has provided the first of twelve 7-meter antennas to the Atacama Large Millimeter/submillimeter Array (ALMA) observatory in Chile. On 28 July 2011, the first European antenna for ALMA arrived at the Chajnantor plateau, 5,000 meters above sea level, to join 15 antennas already in place from the other international partners. Japan constructed 16 Antennas. The merged array combined the sensitivity of the LSA with the frequency coverage and superior site of the MMA. The European ARC (led by ESO) has been further subdivided into ARC-nodes[34] located across Europe in Bonn-Bochum-Cologne, Bologna, Ondřejov, Onsala, IRAM (Grenoble), Leiden and JBCA (Manchester). Die Atacama-Wüste in Chile gehört nicht nur zu den trockensten Orten dieser Welt, nachts ist es dort auch besonders dunkel. 66th and final antenna arrived and accepted. [18] Both transporters were delivered to the ALMA Operations Support Facility (OSF) in Chile on 15 February 2008. At the end of 2009, a team of ALMA astronomers and engineers successfully linked three antennas at the 5,000-metre (16,000 ft) elevation observing site thus finishing the first stage of assembly and integration of the fledgling array. First move of an ALMA antenna to Chajnantor. The Joint ALMA Observatory (JAO) provides the unified leadership and management of the construction, commissioning and operation of ALMA. [42][43], In March 2020, ALMA was shut down due to the COVID-19 coronavirus crisis. Start of Early Science Cycle 1. Further discussions between ALMA and NAOJ led to the signing of a high-level agreement on 14 September 2004 that makes Japan an official participant in Enhanced ALMA, to be known as the Atacama Large Millimeter/submillimeter Array. ACT wird gemeinsam von 17 Institutionen aus den USA (unter anderem der Princeton University), Kanada, Mexiko, Chile, Südafrika und Großbritannien gebaut und betrieben und hauptsächlich von der National Science Foundation finanziert. The ACT Collaboration; Das; Sherwin; Aguirre; Appel; Bond; Carvalho; Devlin et al.. European, North American & Japanese amend agreement on the Enhanced ALMA. They are powered by twin turbocharged 500 kW Diesel engines. The antennas forming the Atacama Compact Array, four 12-meter antennas and twelve 7-meter antennas, were produced and delivered by Japan. Share the excitement of the inauguration ceremony and contemplate the breathtaking images from ALMA itself and views of its unique environment in the Atacama Desert. The telescopes were provided by the European, North American and East Asian partners of ALMA. [35], The Atacama Compact Array, ACA, is a subset of 16 closely separated antennas that will greatly improve ALMA's ability to study celestial objects with a large angular size, such as molecular clouds and nearby galaxies. Das Atacama Cosmology Telescope ACT ist ein Radioteleskop zur Untersuchung des kosmischen Mikrowellenhintergrunds (CMB).