Danish 1.54-metre telescope

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It was completely overhauled in 1993 and is now equipped with the Danish Faint Object Spectrograph and Camera spectrograph/camera."/> <meta name="description" content="The Danish 1.54-metre telescope, built by Grubb–Parsons, has been in use at La Silla since 1979. 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href="/web/20210417193630/https://www.eso.org/public/teles-instr/">Telescopes & Instruments<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 current"> <ul id="submenu-aim-245" class="submenu-aim selected current"> <li class="submenu"><a href="/web/20210417193630/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-246" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210417193630/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-247" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210417193630/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-248" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/4lgsf/"> 4LGSF </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/amber/"> AMBER </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires/"> CRIRES </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires+/"> CRIRES+ </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/espresso/"> ESPRESSO </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/eris/"> ERIS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/flames/"> FLAMES </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/fors/"> FORS1 and FORS2 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/gravity/"> GRAVITY </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/hawk-i/"> HAWK-I </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/isaac/"> ISAAC </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/kmos/"> KMOS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/mad/"> MAD </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/matisse/"> MATISSE </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/midi/"> MIDI </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/moons/"> MOONS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/muse/"> MUSE </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naco/"> NACO </a></li><li class=""><a 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href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/x-shooter/"> X-shooter </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vtl-test-cameras/"> VLT Test Cameras </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vinci/"> VINCI </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-277" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/antu/"> Antu </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/kueyen/"> Kueyen </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/melipal/"> Melipal </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/yepun/"> Yepun </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/auxiliarytelescopes/"> Auxiliary Telescopes </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-283" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210417193630/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-284" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/mirror/"> The VISTA mirror </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/camera/"> VIRCAM </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/4most/"> 4MOST </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/surveys/"> The VISTA surveys </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/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-290" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/mirror/"> The VST mirrors </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/camera/"> OmegaCAM </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/"> SPECULOOS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/ngts/"> NGTS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/paranal-observatory/cta/"> Cherenkov Telescope Array </a></li></ul></li><li class="submenu current"><a href="/web/20210417193630/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-297" class="submenu-aim sublevel selected current current-leaf"><li class="submenu"><a href="/web/20210417193630/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-298" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/swedish/simba/"> SIMBA </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-300" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/ntt/efosc2/"> EFOSC2 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/ntt/emmi/"> EMMI </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/ntt/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/ntt/sofi/"> SOFI </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/ntt/soxs/"> SOXS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/ntt/susi2/"> SUSI and SUSI2 </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-307" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/adonis/"> ADONIS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/caspec/"> CASPEC </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/harps/"> HARPS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/mefos/"> MEFOS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/nirps/"> NIRPS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/optopus/"> OPTOPUS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/timmi2/"> TIMMI/2 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/36-infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/36-standard-photometer/"> Standard Photometer </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/infrared-specklegraph/"> Infrared Specklegraph </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/infrared-speckle-interferometer/"> Infrared Speckle Interferometer </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/36/efosc/"> EFOSC </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-321" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/mpg22/feros/"> FEROS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/mpg22/grond/"> GROND </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/mpg22/irac2/"> IRAC & IRAC2 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/mpg22/pisco/"> PISCO </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/mpg22/wfi/"> WFI </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/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-328" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/swiss/coralie/"> CORALIE </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/rem/"> Rapid Eye Mount telescope </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/trappist/"> TRAnsiting Planets and PlanetesImals Small Telescope–South </a></li><li class="submenu current current-leaf"><a href="/web/20210417193630/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-332" class="submenu-aim sublevel selected"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/coravel/"> CORAVEL </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/dfosc/"> DFOSC </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/ccd/"> CCD camera </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/hb-photometer/"> Hβ Photometer </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/two-channel-photometer/"> Two-Channel Photometer </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/four-channel-photometer/"> Four-Channel Photometer </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/https://www.eso.org/public/teles-instr/lasilla/tarot/"> Télescope à Action Rapide pour les Objets Transitoires </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/1mschmidt/"> ESO 1-metre Schmidt telescope </a></li><li class="submenu"><a href="/web/20210417193630/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-342" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/152metre/bandc/"> Boller and Chivens Spectrograph </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/152metre/coude/"> Coudé Spectrograph </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/152metre/echelec/"> ECHELEC </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/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-347" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/1metre/fideos/"> FIDEOS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/1metre/infrared-photometer/"> Infrared Photometer </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/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-351" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/05metre/single-channel-photometer/"> Single-Channel Photometer </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/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-354" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/coude/ces/"> CES </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/marly/"> MarLy 1-metre telescope </a></li><li class="submenu"><a href="/web/20210417193630/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-357" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/09metre/walraven/"> Walraven Photometer </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/t70/"> Swiss T70 telescope </a></li><li class="submenu"><a href="/web/20210417193630/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-360" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-scanner/"> Bochum Scanner </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-photometer/"> Bochum Photometer </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-363" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/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/20210417193630/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/20210417193630/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/20210417193630/https://www.eso.org/public/teles-instr/lasilla/gpo/"> Grand Prisme Objectif telescope </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/swiss04/"> Swiss 0.4-metre telescope </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/marseille/"> Marseille 0.36-metre telescope </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/grb/"> GRB Monitoring System </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/mascara/"> MASCARA </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/blackgem/"> BlackGEM </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/extra/"> ExTrA </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/test-bed/"> Test-Bed Telescope </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-375" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/artemis/"> ArTéMiS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/laboca/"> LABOCA </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/saboca/"> SABOCA </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/sepia/"> SEPIA </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/apex-2a/"> APEX–2A </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/aszca/"> ASZCa </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/champ-plus/"> CHAMP+ </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/flash/"> FLASH </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/flash-plus/"> FLASH+ </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/mpi_11thz/"> MPI_1.1THz </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/p-artemis/"> P-ArTéMiS </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/pi230/"> PI230 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/polka/"> PolKa </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/apex/shefi/"> SHeFI </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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-390" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/alma/antennas/"> Antennas </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/alma/transporters/"> Transporters </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/alma/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/alma/receiver-bands/"> Receiver Bands </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/alma/residencia/"> ALMA Residencia </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/elt/"> ELT </a></li><li class="submenu"><a href="/web/20210417193630/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 fa-angle-down"></span></span><ul id="submenu-aim-397" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/technology/active_optics/"> Active Optics </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/technology/adaptive_optics/"> Adaptive Optics </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/technology/ifu/"> Integral Field Units </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/technology/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/technology/spectroscopy/"> Spectroscopy </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/teles-instr/instruments/"> Instruments </a></li> </ul> </div> </div> </li> <li><a href="/web/20210417193630/https://www.eso.org/public/science/">Discoveries<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-404" class="submenu-aim"> <li class=""><a href="/web/20210417193630/https://www.eso.org/public/science/top10/"> ESO Top 10 Astronomical Discoveries </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/science/exoplanets/"> Exoplanets </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/science/gravitationalwaves/"> Gravitational Wave Sources </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/science/gc/"> Black Hole at the Centre of our Galaxy </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/science/grb/"> Gamma-Ray Bursts </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/science/archive/"> Science Archive </a></li> </ul> </div> </div> </li> <li><a href="/web/20210417193630/https://www.eso.org/public/events/">Events<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-411" class="submenu-aim"> <li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/press-evt/"> Press Events </a></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/"> Special 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-413" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/announcements/ann18065/"> Open House Day 2018 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/asteroid-day/"> Asteroid Day </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse17/"> Open House Day 2017 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/announcements/ann16071/"> Open House Day 2016 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/MeetESO/"> #MeetESO </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse15/"> Long Night of Science 2015 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2014/"> ASTRONET 2014 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse14/"> Open House Day 2014 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/eeltblast/"> ELT Groundbreaking </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/cafe-and-kosmos/"> Café & Kosmos in Munich </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse13/"> Open House Day 2013 </a></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/"> ASTRONET 2013 <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-425" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/dates/"> Important Dates </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/registration/"> Registration, Fees and Payment </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/abstracts/"> Abstract Submission </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/venue/"> Workshop Venue </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/practical_information/"> Practical Information </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/accommodation/"> Accommodation </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/organisers_partners/"> Organisers & Partners </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/contact/"> Contact </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/schedule/"> Schedule </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/astronet2013/participants/"> Participants </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/"> ESO 50 Years <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-436" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/message/"> Message from the DG </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/50highlights50years/"> Fifty Highlights </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/competitions/"> Competitions </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/twitter/"> Twitter Feed </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/webcast/"> Webcast </a></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/europetothestars/"> Europe to the Stars <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-442" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/europetothestars/news/"> News </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/europetothestars/movie/"> Movie </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/europetothestars/book/"> Book </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/europetothestars/reviews/"> Reviews </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/europetothestars/bios/"> Bios </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/50years/europetothestars/offers/"> Purchase Offers </a></li><li class=""><a 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href="/web/20210417193630/https://www.eso.org/public/events/special-evt/awesome-universe/organisers/"> For Exhibitors </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/iya2009/"> IYA 2009 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/100ha/"> 100 Hours of Astronomy </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/theeye/"> The Eye 3D </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/imax-hidden-universe/"> IMAX® 3D Film Hidden Universe </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse11/"> Open House Day 2011 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse09/"> Open House Day 2009 (German) </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/bond/"> Bond at Paranal </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/lndw-2007eng/"> Long Night of Science 2007 </a></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse/"> Open House Day 2006 <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-463" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse/ohd06-winnerslist/"> List of Prize Winners </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse/tdot06/"> Deutsche Fassung </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/openhouse/tdot06-gewinnerliste/"> Liste der Preisgewinner </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/pt-011203/"> Public Talks 2003 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/special-evt/eso40years/"> ESO 40 Years (1962 - 2002) </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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/20210417193630/https://www.eso.org/public/events/exhibitions/perma_exhibitions/"> ESO Permanent Exhibitions </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://www.esof.eu/"> EuroScience Open Forum (ESOF) </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://eas.unige.ch/EWASS2016/"> EWASS 2016 </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/https://aas.org/meetings/aas227"> AAS Winter 2016 </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/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/20210417193630/https://www.eso.org/public/events/astro-evt/solareclipse2019/"> Total Solar Eclipse 2019 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/mcnaught2007/"> The Comet McNaught 2007 </a></li><li class=""><a href="/web/20210417193630/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/20210417193630/http://www.vt-2004.org/"> The Venus Transit - 08.11.2004 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/leonids99/"> The Leonids - 17.11.1999 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/eclipse99/"> Solar Eclipse at ESO HQ - 11.08.1999 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/leonids98/"> The Leonids - 11.1998 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/pathfinder/"> Mars Pathfinder - 1997 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/hyakutake/"> Comet Hyakutake - 1997 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/sl9/"> SL-9 and Jupiter - 1994 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/astro-evt/hale-bopp/"> Comet Hale Bopp - 1994 </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/events/seminars/"> Astronomy Communication Seminars </a></li> </ul> </div> </div> </li> <li><a href="/web/20210417193630/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/20210417193630/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 id="submenu-aim-488" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/products/education/"> Educational Material </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://www.scienceinschool.org/" target="_blank"> Science in School </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://www.sterrenlab.com/camps/eso-astronomy-camp-2017/"> ESO Astronomy Camp 2017 </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/https://web.archive.org/web/20190722044743/http://www.sterrenlab.com/camps/eso-astronomy-camp-2016/"> ESO Astronomy Camp 2016 </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/https://web.archive.org/web/20190810160701/http://www.sterrenlab.com/camps/eso-astronomy-camp-2015/"> ESO Astronomy Camp 2015 </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/https://web.archive.org/web/20190321214717/http://www.sterrenlab.com/camps/eso-astronomy-camp-2014/"> ESO Astronomy Camp 2014 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/teacherschools/"> Teacher Schools </a></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/prev-programmes/"> Previous Programmes <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-496" class="submenu-aim sublevel"><li class=""><a href="https://web.archive.org/web/20210417193630/http://www.eaae-astronomy.org/catchastar/cas2013"> Catch a Star 2013 </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://www.eaae-astronomy.org/catchastar/cas2011"> Catch a Star 2011 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/cas/cas2008/"> Catch a Star 2008 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/cas/cas2007/"> Catch a Star 2007 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/cas/cas2005/"> Catch a Star 2005 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/cas/cas2004/"> Catch a Star 2004 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/cas/cas2003/"> Catch a Star 2003 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/cas/cas2002/"> Catch a Star 2002 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/liu/"> Life in the Universe </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/pos/"> Physics On Stage </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/eduoff/seaspace/docs/"> Sea & Space </a></li></ul></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://kids.alma.cl/?lang=en"> ALMA Kids </a></li></ul></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/"> Partnerships <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-509" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/translators/"> Volunteer Translators </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/eson/"> ESO Science Outreach Network </a></li><li class="submenu"><a href="/web/20210417193630/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-512" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/chile/2010/"> 2010 </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/chile/2009/"> 2009 </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/eso-ambassadors/"> ESO Outreach Ambassadors </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/organisations/"> ESO Outreach Partner Organisations </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/educators/"> Informal Educators </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://eso.us2.list-manage1.com/subscribe?u=c35dd77ef962de779092c970b&id=bd58d6ae8d"> Outreach Newsletter Form </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/photo-ambassadors/"> ESO Photo Ambassadors </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/partnerships/music-ambassadors/"> ESO Music Ambassadors </a></li></ul></li><li class=""><a href="https://web.archive.org/web/20210417193630/https://www.eso.org/public/outreach/first-picture-of-a-black-hole/blog/"> Taking the First Picture of a Black Hole </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/communication-resources/"> Astronomy Communication Resources </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/gems/"> Cosmic Gems </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/social/"> Social Media </a></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/outreach/ultra-high-definition/"> Ultra HD Expedition <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-525" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/ultra-high-definition/team/"> Meet our Heroes </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/ultra-high-definition/journey/"> Journey Schedule </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/ultra-high-definition/equipment/"> Equipment </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/ultra-high-definition/technology-partners/"> Technology Partners </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/ultra-high-definition/blog/"> Blog </a></li></ul></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/for_planetariums/"> For Planetariums </a></li><li class=""><a href="https://web.archive.org/web/20210417193630/http://www.eso.org/public/outreach/webcams/"> Webcams </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/your_eso_pictures/"> Your ESO Pictures </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/astroprize/"> European Astronomy Journalism Prize </a></li><li class="submenu"><a href="/web/20210417193630/https://www.eso.org/public/outreach/hiddentreasures/"> Hidden Treasures <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-535" class="submenu-aim sublevel"><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/hiddentreasures/rules/"> Hidden Treasures Rules </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/hiddentreasures/instructions/"> Hidden Treasures Instructions </a></li><li class=""><a href="/web/20210417193630/https://www.eso.org/public/outreach/hiddentreasures/science_archive/"> Hidden Treasures Form 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save page :( Please try again. </div> </div> <div class="page-content"> <div id="editable-content"> <style> .header-banner-wrapper{ position: relative; overflow: hidden; height: 253px; } .header-banner-wrapper img{ position: absolute; top: -30%; left:0; right: 0; bottom:-100%; margin: auto; } </style> <h1>Danish 1.54-metre telescope</h1> <div class="header-banner-wrapper" style="margin-bottom: 30px;"> <a href="/web/20210417193630/https://www.eso.org/public/images/beletsky_lasilla_23/"> <img alt="Danish 1.54-metre telescope" src="/web/20210417193630im_/https://www.eso.org/public/archives/images/screen/beletsky_lasilla_23.jpg"> </a> </div> <div class="row"> <div class="col-md-8"> <p>The Danish 1.54-metre telescope, built by Grubb–Parsons, has been in use at La Silla since 1979. It was completely overhauled in 1993 and is now equipped with the <a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/dfosc/">Danish Faint Object Spectrograph and Camera</a> instrument. The telescope has allowed astronomers to make several first discoveries. In 2005 astronomers showed that short, intense bursts of gamma-ray emission most likely originate from the violent collision of two merging neutron stars, ending a long debate (<a href="/web/20210417193630/https://www.eso.org/public/news/eso0533/">eso0533</a>). In 2006, astronomers using a network of telescopes scattered across the globe, including the Danish 1.54-metre Telescope, discovered an exoplanet only about five times as massive as the Earth, and circling its parent star in about ten years (<a href="/web/20210417193630/https://www.eso.org/public/news/eso0603/">eso0603</a>). This telescope has also been used to produce many impressive <a href="/web/20210417193630/https://www.eso.org/public/images/archive/search/?adv=&facility=18">astronomical images</a>.</p> <div class="row" style="margin-top: 20px; margin-bottom: 9px"> <div class="col-md-4 col-sm-4 col-xs-12" style="text-align:center;"> <a href="/web/20210417193630/https://www.eso.org/public/images/esopia00052teles/"><img src="/web/20210417193630im_/https://www.eso.org/public/archives/images/thumb300y/esopia00052teles.jpg" style="margin-bottom: 9px"></a> </div> <div class="col-md-8 col-sm-8 col-xs-12" style="text-align:center"> <a href="/web/20210417193630/https://www.eso.org/public/images/dss_dansky-cc/"><img src="/web/20210417193630im_/https://www.eso.org/public/archives/images/thumb300y/dss_dansky-cc.jpg" style="max-height: 233px"></a> </div> </div> <h3>Science goals</h3> <p>Gamma Ray Burst (GRB) follow-up, photometry, comets</p> <h3>Links</h3> <ul> <li><a href="https://web.archive.org/web/20210417193630/http://allsky-dk154.asu.cas.cz/">All-sky camera live</a></li> <li>More information is available in this <a href="/web/20210417193630/https://www.eso.org/sci/publications/messenger/archive/no.16-mar79/messenger-no16.pdf">article</a> from The Messenger and on the <a href="https://web.archive.org/web/20210417193630/http://www.eso.org/sci/facilities/lasilla/telescopes/d1p5/">science pages</a>.</li> </ul> <br> <div id="lasillaWebcam"> <h2>LIVE all-sky camera</h2> <img src="https://web.archive.org/web/20210417193630im_/https://images.weserv.nl/?url=allsky-dk154.asu.cas.cz/AllSkyCurrentImage.JPG" alt="LIVE all-sky camera"> <p align="center"><small>All Sky camera near the <a href="/web/20210417193630/https://www.eso.org/public/teles-instr/lasilla/danish154/">Danish 1.54-metre telescope</a> at La Silla. More information <a href="https://web.archive.org/web/20210417193630/http://allsky-dk154.asu.cas.cz/">on this link</a></small></p> </div> </div> <div class="col-md-4"> <table class="table table-bordered" width="100%"> <tbody> <tr> <td> <h3>Danish 1.54-metre telescope</h3> <table class="table"> <tbody> <tr> <td valign="top" width="80"><strong>Name:</strong></td> <td valign="top">Danish 1.54-metre telescope</td> </tr> <tr> <td valign="top" width="80"><strong>Site:</strong></td> <td valign="top">La Silla</td> </tr> <tr> <td valign="top" width="80"><strong>Altitude:</strong></td> <td valign="top">2375 m</td> </tr> <tr> <td valign="top"><strong>Enclosure:</strong></td> <td valign="top">Classical dome</td> </tr> <tr> <td valign="top"><strong>Type:</strong></td> <td valign="top">Spectrographic telescope</td> </tr> <tr> <td valign="top"><strong>Optical design:</strong></td> <td valign="top">Ritchey-Chrétien Reflector</td> </tr> <tr> <td valign="top"><strong>Diameter. Primary M1:</strong></td> <td valign="top">1.54 m</td> </tr> <tr> <td valign="top"><strong>Material. Primary M1:</strong></td> <td valign="top">Cervit</td> </tr> <tr> <td valign="top"><strong>Diameter. Secondary M2:</strong></td> <td valign="top">0.61 m</td> </tr> <tr> <td valign="top"><strong>Material. Secondary M2:</strong></td> <td valign="top">Cervit</td> </tr> <tr> <td valign="top"><strong>Mount:</strong></td> <td valign="top">Off-axis equatorial mount</td> </tr> <tr> <td valign="top"><strong>First Light date:</strong></td> <td valign="top">20 November 1978</td> </tr> <tr> <td valign="top"><strong>Images taken with the Danish 1.54-metre telescope:</strong></td> <td valign="top"><a href="/web/20210417193630/https://www.eso.org/public/images/archive/search/?adv=&facility=18">Link</a></td> </tr> <tr> <td valign="top"><strong>Images of the Danish 1.54-metre telescope:</strong></td> <td valign="top"><a href="/web/20210417193630/https://www.eso.org/public/images/archive/search/?adv=&subject_name=1.54">Link</a></td> </tr> <tr> <td valign="top"><strong>Videos of the Danish 1.54-metre telescope:</strong></td> <td valign="top"><a href="/web/20210417193630/https://www.eso.org/public/videos/archive/search/?adv=&subject_name=1.54">Link</a></td> </tr> <tr> <td valign="top"><strong>Press Releases with the Danish 1.54-metre telescope:</strong></td> <td valign="top"><a href="/web/20210417193630/https://www.eso.org/public/news/archive/search/?adv=&facility=18">Link</a></td> </tr> </tbody> </table> </td> </tr> </tbody> </table> </div> </div> </div> </div> </div> </div> </div>  <div class="row footernote"> <div class="col-xs-12 col-md-3"> <a href="https://web.archive.org/web/20210417193630/mailto:information@eso.org">Send us your comments!</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20210417193630/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/20210417193630/https://www.cdn77.com/">Accelerated by CDN77</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20210417193630/https://www.eso.org/public/about-eso/privacy/">Terms & Conditions</a> </div> </div> <link href="/web/20210417193630cs_/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/20210417193630js_/https://www.eso.org/public/archives/djp/js/main.86f0f17c90d3.js" charset="utf-8"></script> <script type="text/javascript"> const getWebcamStatus = async (cam) => { const url = '/public/outreach/webcamstatus/' + cam + '/'; const response = await fetch(url); return await response.json(); } // Fetch the webcam status getWebcamStatus('all').then((statusAll) => { getWebcamStatus('lasilla').then((statusLasilla) => { // console.log(statusLasilla); const lasillaDiv = document.querySelector('#lasillaWebcam'); if (statusAll['published'] && statusLasilla['published']) { lasillaDiv.style.display = "block"; } else { lasillaDiv.style.display = "none"; } }).catch((error) => { console.error(error); }); }).catch((error) => { console.error(error); }); </script> </div>  <div id="social-share" class="hidden-print"> <div class="link facebook" data-toggle="tooltip" data-placement="right" title="Share on Facebook"> <a href="https://web.archive.org/web/20210417193630/https://www.facebook.com/sharer/sharer.php?u=https://www.eso.org/public/teles-instr/lasilla/danish154/" target="_blank"><i class="fa fa-facebook" aria-hidden="true"></i></a> </div> <div class="link twitter" data-toggle="tooltip" data-placement="right" title="Share on Twitter"> <a href="https://web.archive.org/web/20210417193630/http://twitter.com/intent/tweet?url=https://www.eso.org/public/teles-instr/lasilla/danish154/&text=Danish 1.54-metre telescope&via=ESO" target="_blank"><i class="fa fa-twitter" aria-hidden="true"></i></a> </div> <div class="link pinterest" data-toggle="tooltip" data-placement="right" title="Share on Pinterest"> <a href="https://web.archive.org/web/20210417193630/http://pinterest.com/pin/create/button/?url=https://www.eso.org/public/teles-instr/lasilla/danish154/&media=&description=Danish 1.54-metre telescope" target="_blank"><i class="fa fa-pinterest" aria-hidden="true"></i></a> </div> <div class="link print" data-toggle="tooltip" data-placement="right" title="Print"> <a href="javascript:window.print()" target="_blank"><i class="fa fa-print" aria-hidden="true"></i></a> </div> <div class="link email" data-toggle="tooltip" data-placement="right" title="Share by email"> <a href="https://web.archive.org/web/20210417193630/mailto:%20?subject=ESO — Danish 1.54-metre telescope&body=https://www.eso.org/public/teles-instr/lasilla/danish154/" target="_blank"><i class="fa fa-envelope-o" aria-hidden="true"></i></a> </div> </div> <script> $('[data-toggle="tooltip"]').tooltip(); </script> <input type="hidden" name="csrfmiddlewaretoken" value="jE931Tzv0snwYRv4Ry4dkgUsBovTDfDGzsLIAmqCIZVEzE7GLsNt17gZYfZacMDM"/> </body> </html>

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