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Cesarsky </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/dg-office/rgiacconi/"> Prof. R. Giacconi </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/dg-office/hvanderlaan/"> Prof. H. van der Laan </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/dg-office/lwoltjer/"> Prof. L. Woltjer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/dg-office/ablaauw/"> Prof. A. Blaauw </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/dg-office/otto-heckmann/"> Prof. O. Heckmann </a></li></ul></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/committees.html"> ESO's Governing Bodies </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/about-eso/memberstates/"> Member States <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-16" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/memberstates/austrianinvolvement/"> Austria </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/memberstates/belgianinvolvement/"> Belgium </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/memberstates/czechinvolvement/"> Czech Republic </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/memberstates/danishinvolvement/"> 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href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/garching/"> Travel to ESO Headquarters </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/vitacura/"> Travel to Vitacura Office </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/guesthouse/"> Travel to Guesthouse </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/lasilla/"> Travel to La Silla </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/laserena/"> Travel to La Serena </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/paranal/"> Travel to Paranal </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/antofagasta/"> Travel to Antofagasta </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/apexsequitor/"> Travel to APEX/Sequitor </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/chajnantor/"> Travel to Chajnantor </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/travel/elt/"> Travel to ELT Armazones </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/about-eso/visitors/"> Visits to ESO Sites <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-44" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/visitors/paranal/"> Weekend visits to Paranal </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/visitors/lasilla/"> Weekend Visits to La Silla </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/visitors/alma/"> Public Visits to the ALMA OSF </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/outreach/pressmedia/mediavisits/"> Media Visits </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/societal-benefits/"> ESO and Society </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/about-eso/eso-and-chile/"> ESO & Chile <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-50" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/eso-and-chile/representation-office-chile/"> ESO Representation Office in Chile </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/architecture/"> Architecture at ESO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/collaborations/"> Collaborations with ESO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/acronyms/"> ESO Acronyms </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/timeline/"> Timeline </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/green/"> Green ESO </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/"> Frequently Asked Questions <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-57" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/faq-eso/"> ESO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/faq-vlt-paranal/"> VLT/Paranal </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/faq-apex-alma/"> APEX/ALMA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/faq-survey-telescopes/"> Survey Telescopes </a></li><li class=""><a href="https://web.archive.org/web/20220305155318/https://elt.eso.org/about/faq/"> ELT </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/privileges_and_immunities/"> Privileges and Immunities </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/faq-eso-australia/"> ESO & Australia </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/dark-skies-preservation/"> Dark skies preservation </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/about-eso/privacy/"> Terms and Conditions </a></li> </ul> </div> </div> </li> <li><a href="/web/20220305155318/https://www.eso.org/public/images/">Images<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-67" class="submenu-aim"> <li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/search/"> Advanced Search </a></li><li class="submenu"><a class="no-link children" href="#"> Categories <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-69" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/360pano/ "> 360 Panorama </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/alma/"> ALMA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/apex/"> APEX </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/chile/"> Chile </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/cosmology/"> Cosmology </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/elt/"> ELT </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/eso-supernova/"> ESO Supernova </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/exoplanets/"> Exoplanets </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/fulldome/"> Fulldome </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/galaxies/"> Galaxies </a></li><li class=""><a 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href="/web/20220305155318/https://www.eso.org/public/images/potw/archive/year/2007/"> 2007 </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/images/archive/top100/"> Top 100 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-111" class="submenu-aim sublevel"><li class=""><a href="https://web.archive.org/web/20220305155318/https://cdn.eso.org/images/top100-large.zip"> Large JPG Zip File (3.5 GB) </a></li><li class=""><a href="https://web.archive.org/web/20220305155318/https://cdn.eso.org/images/top100-original.zip"> Original TIF Zip File (50 GB) </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/copyright/"> Usage of ESO Images and Videos </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/wallpapers/"> Wallpapers </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/images/archive/zoomable/"> Zoomable </a></li> </ul> </div> </div> </li> <li><a href="/web/20220305155318/https://www.eso.org/public/videos/">Videos<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-117" class="submenu-aim"> <li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/search/"> Advanced Search </a></li><li class="submenu"><a class="no-link children" href="#"> Categories <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-119" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/abouteso/"> About ESO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/alma/"> ALMA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/apex/"> APEX </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/compilations/"> Compilations </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/cosmology/"> Cosmology </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/elt/"> ELT </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/esocast/"> ESOcast </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/events/"> Events </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/exoplanets/"> Exoplanets </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/featuremovies/"> Feature Movies </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/fulldome/"> Fulldome </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/galaxies/"> Galaxies </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/galaxyclusters/"> Galaxy Clusters </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/lasilla/"> La Silla </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/nebulae/"> Nebulae </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/paranal/"> Paranal </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/premises/"> Premises </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/blackholes/"> Quasars and Black Holes </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/solarsystem/"> Solar System </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/starclusters/"> Star Clusters </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/stars/"> Stars </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/vnr/"> Video News Releases </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/copyright/"> Usage of ESO Videos and Images </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/videoformats/"> Video Formats </a></li> </ul> </div> </div> </li> <li><a href="/web/20220305155318/https://www.eso.org/public/news/">News<span class="fa 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href="/web/20220305155318/https://www.eso.org/public/news/archive/year/1987/"> 1987 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/news/archive/year/1986/"> 1986 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/news/archive/year/1985/"> 1985 </a></li></ul></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/announcements/"> Announcements <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-189" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/announcements/archive/year/2022/"> 2022 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/announcements/archive/year/2021/"> 2021 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/announcements/archive/year/2020/"> 2020 </a></li><li 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<span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1 current"> <ul id="submenu-aim-249" class="submenu-aim selected current current-leaf"> <li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/"> Paranal Observatory <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-250" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/"> Very Large Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-251" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/"> VLT Instruments <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-252" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/4lgsf/"> 4LGSF </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires/"> CRIRES </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires+/"> CRIRES+ </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/espresso/"> ESPRESSO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/eris/"> ERIS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/flames/"> FLAMES </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/fors/"> FORS1 and FORS2 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/hawk-i/"> HAWK-I </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/isaac/"> ISAAC </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/kmos/"> KMOS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/mad/"> MAD </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/moons/"> MOONS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/muse/"> MUSE </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naco/"> NACO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sinfoni/"> SINFONI </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sphere/"> SPHERE </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/uves/"> UVES </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vimos/"> VIMOS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/visir/"> VISIR </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/x-shooter/"> X-shooter </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vtl-test-cameras/"> VLT Test Cameras </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/"> VLT Unit Telescopes Names <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-274" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/antu/"> Antu </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/kueyen/"> Kueyen </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/melipal/"> Melipal </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/yepun/"> Yepun </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlti/"> VLT Interferometer <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-279" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/gravity/"> GRAVITY </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/matisse/"> MATISSE </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naomi/"> NAOMI </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/pionier/"> PIONIER </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/amber/"> AMBER </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/midi/"> MIDI </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vinci/"> VINCI </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/auxiliarytelescopes/"> Auxiliary Telescopes </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/"> Survey Telescopes <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-288" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/"> VISTA <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-289" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/mirror/"> The VISTA mirror </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/camera/"> VIRCAM </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/4most/"> 4MOST </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/surveys/"> The VISTA surveys </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/consortium/"> The VISTA consortium </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/"> VST <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-295" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/mirror/"> The VST mirrors </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/camera/"> OmegaCAM </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/surveys/"> The VST surveys </a></li></ul></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/"> SPECULOOS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/ngts/"> NGTS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/paranal-observatory/cta/"> Cherenkov Telescope Array </a></li></ul></li><li class="submenu current current-leaf"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/"> La Silla Observatory <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-302" class="submenu-aim sublevel selected"><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swedish/"> Swedish–ESO Submillimetre Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-303" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swedish/simba/"> SIMBA </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt/"> New Technology Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-305" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt/efosc2/"> EFOSC2 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt/emmi/"> EMMI </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt/sofi/"> SOFI </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt/soxs/"> SOXS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt/susi2/"> SUSI and SUSI2 </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/"> ESO 3.6-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-312" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/adonis/"> ADONIS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/caspec/"> CASPEC </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/harps/"> HARPS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/mefos/"> MEFOS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/nirps/"> NIRPS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/optopus/"> OPTOPUS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/timmi2/"> TIMMI/2 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/36-infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/36-standard-photometer/"> Standard Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/infrared-specklegraph/"> Infrared Specklegraph </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/infrared-speckle-interferometer/"> Infrared Speckle Interferometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36/efosc/"> EFOSC </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/"> MPG/ESO 2.2-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-326" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/feros/"> FEROS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/grond/"> GROND </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/irac2/"> IRAC & IRAC2 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/pisco/"> PISCO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/wfi/"> WFI </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swiss/"> Swiss 1.2-metre Leonhard Euler Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-333" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swiss/coralie/"> CORALIE </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/rem/"> Rapid Eye Mount telescope </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/trappist/"> TRAnsiting Planets and PlanetesImals Small Telescope–South </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/"> Danish 1.54-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-337" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/coravel/"> CORAVEL </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/dfosc/"> DFOSC </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/ccd/"> CCD camera </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/hb-photometer/"> Hβ Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/two-channel-photometer/"> Two-Channel Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/four-channel-photometer/"> Four-Channel Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/six-channel-photometer/"> Six-Channel uvby-Hβ Photometer </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/tarot/"> Télescope à Action Rapide pour les Objets Transitoires </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/1mschmidt/"> ESO 1-metre Schmidt telescope </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/152metre/"> ESO 1.52-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-347" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/152metre/bandc/"> Boller and Chivens Spectrograph </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/152metre/coude/"> Coudé Spectrograph </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/152metre/echelec/"> ECHELEC </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/152metre/rv-cass-spectrograph/"> RV Cass Spectrograph </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/1metre/"> ESO 1-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-352" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/1metre/fideos/"> FIDEOS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/1metre/infrared-photometer/"> Infrared Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/1metre/single-channel-photometer/"> Single-Channel Photometer </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/05metre/"> ESO 0.5-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-356" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/05metre/single-channel-photometer/"> Single-Channel Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/05metre/double-channel-photometer/"> Double-Channel Photometer </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/coude/"> Coudé Auxiliary Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-359" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/coude/ces/"> CES </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/marly/"> MarLy 1-metre telescope </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/09metre/"> Dutch 0.9-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-362" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/09metre/walraven/"> Walraven Photometer </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/t70/"> Swiss T70 telescope </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/bochum/"> Bochum 0.61-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-365" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-scanner/"> Bochum Scanner </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-photometer/"> Bochum Photometer </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish05/"> Danish 0.5-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-368" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish05/danish-two-channel-hb-photometer/"> Two-Channel Hβ Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish05/danish-four-channel-uvby-photometer/"> Four-Channel uvby Photometer </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish05/danish-six-channel-uvby-hb-photometer/"> Six-Channel uvby–Hβ Photometer </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/gpo/"> Grand Prisme Objectif telescope </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swiss04/"> Swiss 0.4-metre telescope </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/marseille/"> Marseille 0.36-metre telescope </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/grb/"> GRB Monitoring System </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mascara/"> MASCARA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/blackgem/"> BlackGEM </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/extra/"> ExTrA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/test-bed/"> Test-Bed Telescope </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/"> APEX <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-380" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/apex-2a/"> APEX–2A </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/artemis/"> ArTéMiS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/aszca/"> ASZCa </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/champ-plus/"> CHAMP+ </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/concerto/"> CONCERTO </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/flash/"> FLASH </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/flash-plus/"> FLASH+ </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/laboca/"> LABOCA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/mpi_11thz/"> MPI_1.1THz </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/p-artemis/"> P-ArTéMiS </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/pi230/"> PI230 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/polka/"> PolKa </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/saboca/"> SABOCA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/sepia/"> SEPIA </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/apex/shefi/"> SHeFI </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/alma/"> ALMA <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-396" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/alma/antennas/"> Antennas </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/alma/transporters/"> Transporters </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/alma/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/alma/receiver-bands/"> Receiver Bands </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/alma/residencia/"> ALMA Residencia </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/elt/"> ELT </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/technology/"> Technology for Telescopes <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa 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href="/web/20220305155318/https://www.eso.org/public/events/special-evt/openhouse09/"> Open House Day 2009 (German) </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/outreach/bond/"> Bond at Paranal </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/special-evt/openhouse/"> Open House Day 2006 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/special-evt/eso40years/"> ESO 40 Years (1962 - 2002) </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/events/exhibitions/"> Exhibitions <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-469" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/exhibitions/perma_exhibitions/"> ESO Permanent Exhibitions </a></li><li class=""><a href="https://web.archive.org/web/20220305155318/http://www.esof.eu/"> EuroScience Open Forum (ESOF) </a></li><li class=""><a href="https://web.archive.org/web/20220305155318/http://eas.unige.ch/EWASS2016/"> EWASS 2016 </a></li><li class=""><a href="https://web.archive.org/web/20220305155318/https://aas.org/meetings/aas227"> AAS Winter 2016 </a></li></ul></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/"> Astronomical Events <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-474" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/solareclipse2019/"> Total Solar Eclipse 2019 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/mcnaught2007/"> The Comet McNaught 2007 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/deepimpact/"> Deep Impact - 04.07.2005 </a></li><li class=""><a href="https://web.archive.org/web/20220305155318/http://www.vt-2004.org/"> The Venus Transit - 08.11.2004 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/leonids99/"> The Leonids - 17.11.1999 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/eclipse99/"> Solar Eclipse at ESO HQ - 11.08.1999 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/leonids98/"> The Leonids - 11.1998 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/pathfinder/"> Mars Pathfinder - 1997 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/hyakutake/"> Comet Hyakutake - 1997 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/sl9/"> SL-9 and Jupiter - 1994 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/astro-evt/hale-bopp/"> Comet Hale Bopp - 1994 </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/events/seminars/"> Astronomy Communication Seminars </a></li> </ul> </div> </div> </li> <li><a href="/web/20220305155318/https://www.eso.org/public/outreach/">Outreach<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-487" class="submenu-aim"> <li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/outreach/eduoff/"> Education <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul 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href="/web/20220305155318/https://www.eso.org/public/outreach/partnerships/eson/"> ESO Science Outreach Network </a></li><li class="submenu"><a href="/web/20220305155318/https://www.eso.org/public/outreach/partnerships/chile/"> Collaborations in Chile <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-501" class="submenu-aim sublevel"><li class=""><a href="/web/20220305155318/https://www.eso.org/public/outreach/partnerships/chile/2010/"> 2010 </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/outreach/partnerships/chile/2009/"> 2009 </a></li></ul></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/outreach/partnerships/eso-ambassadors/"> ESO Outreach Ambassadors </a></li><li class=""><a href="/web/20220305155318/https://www.eso.org/public/outreach/partnerships/organisations/"> ESO Outreach Partner Organisations 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</div> </div> <div class="page-content"> <div id="editable-content"> <h1>La Silla Observatory</h1> <h2>ESO's first observatory</h2> <p><a href="/web/20220305155318/https://www.eso.org/public/images/lasilla/"><img src="/web/20220305155318im_/https://www.eso.org/public/archives/static/teles-instr/lasilla/images/lasilla.jpg" border="0"></a></p> <div class="row"> <div class="col-md-8"> <p>The La Silla Observatory is located on the outskirts of the Chilean Atacama Desert, 600 km north of Santiago de Chile and at an altitude of 2400 metres. Like other observatories in this geographical area, La Silla is located far from sources of light pollution and, like the Paranal Observatory, home to the Very Large Telescope, it has one of the darkest night skies on the Earth. La Silla has been an ESO stronghold since the 1960s. Here, ESO operates two of the most productive 4-metre class telescopes in the world.</p> <p>The 3.58-metre <a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt.html">New Technology Telescope</a> (NTT) broke new ground for telescope engineering and design and was the first in the world to have a computer-controlled main mirror (active optics), technology developed at ESO and now applied to most of the world's current large telescopes.</p> <p>The <a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36.html">ESO 3.6-metre telescope</a> is now home to the world's foremost extrasolar planet hunter: <a href="/web/20220305155318/https://www.eso.org/sci/facilities/lasilla/instruments/harps.html">High Accuracy Radial velocity Planet Searcher</a> (HARPS), a spectrograph with unrivalled precision.</p> <p>The La Silla Observatory is the first world-class observatory to have been granted certification for the International Organization for Standardization (ISO) 9001 Quality Management System.</p> <p>The infrastructure of La Silla is also used by many of the ESO Member States for targeted projects such as the <a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swiss/">Swiss 1.2-metre Leonhard Euler Telescope</a>, the <a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/rem/">Rapid Eye Mount telescope</a> (REM) and the <a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/tarot/">TAROT Telescope</a> gamma-ray burst chaser, as well as more common user facilities such as the <a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22/">MPG/ESO 2.2-metre</a> and the <a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154/">Danish 1.54-metre</a> Telescopes. The 67-million pixel Wide Field Imager on the MPG/ESO 2.2-metre Telescope has taken many amazing images of celestial objects, some of which have now become icons in their own right.</p> <div style="margin-top: 30px; margin-bottom: 30px; text-align: center;"><a href="/web/20220305155318/https://www.eso.org/public/images/safety-la-silla/"><img src="/web/20220305155318im_/https://www.eso.org/public/archives/images/screen/safety-la-silla.jpg" border="0" alt="La Silla site map" style="max-width: 100%;"></a> <div><small><em>La Silla site map. Credit: ESO</em></small></div> </div> <h2>A tour of the La Silla Observatory</h2> <div class="row"> <div class="col-md-6"> <p style="text-align: center;"><a href="/web/20220305155318/https://www.eso.org/public/products/virtualtours/lasilla/"><img src="/web/20220305155318im_/https://www.eso.org/public/archives/static/teles-instr/lasilla/images/lasilla-vt.jpg" border="0" alt="Virtual Tour at La Silla Observatory"></a><br><small>Click on the image to take a <a href="/web/20220305155318/https://www.eso.org/public/products/virtualtours/lasilla/">Virtual Tour</a> in and nearby La Silla.</small></p> </div> <div class="col-md-6"> <div id="lasillaWebcam"> <p><a href="https://web.archive.org/web/20220305155318/http://www.ls.eso.org/lasilla/dimm/lasc/"><img class="center-block" src="/web/20220305155318im_/https://www.eso.org/public/webcams/lasillacam.gif" border="0" height="198"></a><br><small>Chile night time only! During the day the webcam shows the last frame before sunrise. The red letters indicate telescopes that are observing right now (T—the ESO 3.6-metre telescope, N— New Technology Telescope and D—the MPG/ESO 2.2-metre telescope). Please, see more on <a href="https://web.archive.org/web/20220305155318/http://www.ls.eso.org/lasilla/dimm/lasc/">La Silla - All Sky Camera</a></small>.</p> </div> </div> </div> <h3>Visit the La Silla Observatory</h3> <ul> <li>Journalists, science writers and producers, please see <a href="/web/20220305155318/https://www.eso.org/public/outreach/pressmedia/mediavisits/">Media Visits</a></li> <li>Tourist, students and lay people, please see the <a href="/web/20220305155318/https://www.eso.org/public/about-eso/visitors/lasilla/">Weekend Visits</a> page</li> </ul> <h2>Science with the Telescopes at La Silla</h2> <p><a href="/web/20220305155318/https://www.eso.org/public/images/eso1035a/"><img src="/web/20220305155318im_/https://www.eso.org/public/archives/images/potwmedium/eso1035a.jpg" border="0" align="left" style="padding: 10px 20px 10px 0px;"></a>With about 300 refereed publications attributable to the work of the observatory per year, La Silla remains at the forefront of astronomy. La Silla has led to an enormous number of scientific discoveries, including several "firsts". The HARPS spectrograph is the undisputed champion at finding low-mass extrasolar planets. It detected the system around Gliese 581, which contains what may be the first known rocky planet in a habitable zone, outside the Solar System (<a href="/web/20220305155318/https://www.eso.org/public/news/eso0722/">eso0722</a>). Several telescopes at La Silla played a crucial role in linking gamma-ray bursts — the most energetic explosions in the Universe since the Big Bang — with the explosions of massive stars. Since 1987, the ESO La Silla Observatory has also played an important role in the study and follow-up of the nearest recent supernova, <a href="/web/20220305155318/https://www.eso.org/public/news/eso0708/">SN 1987A</a>.</p> <h3>More about Science at La Silla</h3> <ul> <li><a href="/web/20220305155318/https://www.eso.org/public/science/">Science with ESO Telescopes</a></li> <li>Some of the <a href="/web/20220305155318/https://www.eso.org/public/science/top10/">ESO Top 10 Astronomical Discoveries</a> were done using telescopes on La Silla</li> </ul> <h2>More about La Silla Observatory</h2> <ul> <li>More interesting facts are available on the <a href="/web/20220305155318/https://www.eso.org/public/about-eso/faq/faq-vlt-paranal.html">FAQs page</a></li> <li>More <a href="/web/20220305155318/https://www.eso.org/public/images/archive/category/lasilla/">images</a> and <a href="/web/20220305155318/https://www.eso.org/public/videos/archive/category/lasilla/">videos</a> are available in the ESO multimedia archive.</li> <li><a href="/web/20220305155318/https://www.eso.org/public/products/exhibitions/?search=La+Silla">Exhibition panels</a> for download</li> <li>Read more on about this observatory on the <a href="/web/20220305155318/https://www.eso.org/public/products/handouts/handout_0007/">La Silla Handout</a> in PDF format</li> <li><strong class="bltxt">For Scientists:</strong> for more detailed information, please see our <a href="/web/20220305155318/https://www.eso.org/sci/facilities/lasilla/">technical pages</a></li> </ul> <h2>La Silla Observatory Timelapse</h2> <iframe width="100%" height="350" src="https://web.archive.org/web/20220305155318if_/https://earthengine.google.com/iframes/timelapse_player_embed.html#v=-29.25627,-70.73805,11.973,latLng&t=1.59" frameborder="0"></iframe> <center><small><a href="https://web.archive.org/web/20220305155318/https://earthengine.google.com/iframes/timelapse_player_embed.html#v=-29.25627,-70.73805,11.973,latLng&t=1.59" target="_blank">View larger timelapse</a></small></center> </div> <div class="col-md-4"> <h2>La Silla Trailer</h2> <div class="youtube-embed-iframe-wrapper"> <iframe src="https://web.archive.org/web/20220305155318if_/https://www.youtube.com/embed/vIn1T6lXOIc?rel=0&showinfo=0" frameborder="0" allowfullscreen=""></iframe> </div> <p style="text-align: center;"><small>Download the La Silla trailer in the <a href="/web/20220305155318/https://www.eso.org/public/videos/lasilla-trailer2017-eng/">video archive</a>.</small></p> <p> </p> <div class="box2"> <table class="table table-bordered" width="100%"> <tbody> <tr> <td> <h3>Telescopes currently operated by ESO</h3> <table class="table" border="0" cellspacing="0" cellpadding="1"> <tbody> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/ntt.html">New Technology Telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/36.html">ESO 3.6-metre telescope</a></td> </tr> </tbody> </table> </td> </tr> </tbody> </table> </div> <p> </p> <div class="box2"> <table class="table table-bordered" width="100%"> <tbody> <tr> <td> <h3>National and project telescopes in operation</h3> <table class="table" border="0" cellspacing="0" cellpadding="1"> <tbody> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mpg22.html">MPG/ESO 2.2-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish154.html">Danish 1.54-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swiss.html">Swiss 1.2-metre Leonhard Euler Telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/rem.html">Rapid Eye Mount telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/trappist.html">TRAnsiting Planets and PlanetesImals Small Telescope–South</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/tarot.html">Télescope à Action Rapide pour les Objets Transitoires</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/1mschmidt.html">ESO 1-metre Schmidt telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/1metre.html">ESO 1-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/mascara/">Multi-site All-Sky CAmeRA</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/blackgem/">BlackGEM</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/extra/">ExTrA</a></td> </tr> <tr> </tr> </tbody> </table> </td> </tr> </tbody> </table> </div> <p> </p> <div class="box2"> <table class="table table-bordered" width="100%"> <tbody> <tr> <td> <h3>Decommissioned La Silla telescopes</h3> <table class="table" border="0" cellspacing="0" cellpadding="1"> <tbody> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/152metre/">ESO 1.52-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/05metre/">ESO 0.5-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swedish/">Swedish–ESO Submillimetre Telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/coude/">Coudé Auxiliary Telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/gpo/">Grand Prisme Objectif telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/marly/">MarLy 1-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/t70/">Swiss T70 telescope</a></td> </tr> <tr> <td><a href="https://web.archive.org/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/09metre/">Dutch 0.9-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/marseille/">Marseille 0.36-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/danish05/">Danish 0.5-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/bochum/">Bochum 0.61-metre telescope</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/grb/">GRB Monitoring System</a></td> </tr> <tr> <td><a href="/web/20220305155318/https://www.eso.org/public/teles-instr/lasilla/swiss04/">Swiss 0.4-metre telescope</a></td> </tr> </tbody> </table> </td> </tr> </tbody> </table> </div> <p> </p> <div class="randomtext parbase section"><noscript> <div class="box3"> <strong>Did you know?</strong><br>Stars form in dense clouds of the interstellar medium, but even in these densest regions the pressure is comparable to the most tenuous vacuum created in a laboratory on Earth. In these clouds, the temperatures are below -200 degrees Celsius.</div> </noscript> <div id="2b0253ea-e4ec-423f-899c-8daf88b3f0860" class="box3" style=""><strong>Did you know?</strong><br>Stars form in dense clouds of the interstellar medium, but even in these densest regions the pressure is comparable to the most tenuous vacuum created in a laboratory on Earth. In these clouds, the temperatures are below -200 degrees Celsius.</div> <div id="2b0253ea-e4ec-423f-899c-8daf88b3f0861" class="box3" style="display: none;"><strong>Did you know?</strong><br>The skies over the ESO sites in Chile are so dark that on a clear moonless night it is possible to see your shadow cast by the light of the Milky Way alone.</div> <!-- Java Script for the random text --> <script language="JavaScript">// <![CDATA[ var tlength = 2; if (tlength > 0) { var rndtext_no = Math.floor(tlength*Math.random()); var id = '2b0253ea-e4ec-423f-899c-8daf88b3f086' + rndtext_no; var randomtext = document.getElementById(id); randomtext.style.display = ''; } // ]]></script> </div> <p> </p> <h2>La Silla on Google Map</h2> <p><iframe src="//web.archive.org/web/20220305155318if_/https://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=La+Silla+Observatory,+Chile&sll=-24.63946,-70.387312&sspn=0.00511,0.007263&ie=UTF8&t=h&ll=-29.254204,-70.739198&spn=0.006295,0.006295&output=embed&s=AARTsJps0uKqtT7Ifp45bKbip-NRO69Awg" height="350" frameborder="0" marginheight="0" marginwidth="0"></iframe></p> <center><small><a href="https://web.archive.org/web/20220305155318/https://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=La+Silla+Observatory,+Chile&sll=-24.63946,-70.387312&sspn=0.00511,0.007263&ie=UTF8&t=h&ll=-29.254204,-70.739198&spn=0.006295,0.006295">View larger map</a></small></center> </div> </div> </div> </div> </div> </div> </div> <!-- #body --> <div class="row footernote"> <div class="col-xs-12 col-md-3"> <a href="https://web.archive.org/web/20220305155318/mailto:information@eso.org">Send us your comments!</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20220305155318/https://www.eso.org/public/outreach/newsletters/esonews/">Subscribe to receive news from ESO in your language</a> </div> <div class="col-xs-12 col-md-3"> <a href="https://web.archive.org/web/20220305155318/https://www.cdn77.com/">Accelerated by CDN77</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20220305155318/https://www.eso.org/public/about-eso/privacy/">Terms & Conditions</a> </div> </div> <link href="/web/20220305155318cs_/https://www.eso.org/public/archives/djp/css/extras.166b25c68b97.css" rel="stylesheet" type="text/css"/> <script type="text/javascript">var MEDIA_URL = "/public/archives/"</script> <script type="text/javascript" src="/web/20220305155318js_/https://www.eso.org/public/archives/djp/js/main.6ae27c5f7b90.js" charset="utf-8"></script> <script type="text/javascript"> const getWebcamStatus = async (cam) => { const url = '/public/outreach/webcamstatus/' + cam + '/'; 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