The latest telescope at ESO's Paranal Observatory in Chile -- the VLT Survey Telescope (VST) -- was inaugurated today at the Italian National Institute for Astrophysics (INAF) Observatory of Capodimonte, in Naples, Italy. The ceremony was attended by the Mayor of Naples, Luigi De Magistris, the INAF President, Giovanni Bignami, the ESO representatives Bruno Leibundgut and Roberto Tamai, and the main promoter of the telescope, Massimo Capaccioli of the University of Naples Federico II and INAF.
The VST is a state-of-the-art 2.6-metre telescope, with the huge 268-megapixel camera OmegaCAM at its heart. It is designed to map the sky both quickly and with very fine image quality. The VST is a joint venture between ESO and INAF and OmegaCam has been provided by the OmegaCam consortium. This new telescope is the largest telescope in the world exclusively dedicated to surveying the sky at visible wavelengths . The occasion of the inauguration has been marked by the release of a dramatic picture of the Carina Nebula taken with the new telescope.
This star formation region is one of the most prominent and frequently imaged objects of the southern sky. It has been the subject of many earlier images with ESO telescopes. However, the glowing gas cloud is huge and it is difficult for most large telescopes to study more than a tiny part of it at once. This makes it an ideal target for the VLT Survey Telescope and its big camera, OmegaCAM. The VST delivers very sharp images because of its high quality optics and the excellent site. But, as it was designed for surveys of the sky, it also has a very wide field of view that can take in almost all of the Carina Nebula in a single picture.
This object was a natural target when the President of Chile, Sebastian Piñera, accompanied by the First Lady, Cecilia Morel, were distinguished guests at the Paranal Observatory on 5 June 2012 and participated in observations with the VST. The picture that the President helped to take on this occasion has now been combined with other recent VST images of the Carina Nebula to produce one of the most richly detailed and colourful views of this object ever created.
The Carina Nebula is a huge stellar nursery lying about 7500 light-years from Earth in the constellation of Carina (The Keel). This cloud of glowing gas and dust is one of the closest star formation regions to the Earth and includes several of the brightest and most massive stars known. The Carina Nebula is a perfect laboratory for astronomers studying the violent births and early lives of stars.
The conspicuous red colour of the picture comes from hydrogen gas in the nebula that is glowing under the harsh ultraviolet light from many young and hot stars. Other colours, originating from other elements in the gas, are also visible, as well as many dust clouds. Just above the centre of the picture lies the bright star Eta Carinae. This huge and highly unstable star brightened dramatically in the nineteenth century and is a good candidate for a future supernova explosion.
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