SPECULOOS Southern Observatory

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class="level1 current"> <ul id="submenu-aim-244" class="submenu-aim selected current"> <li class="submenu current"><a href="/web/20210127171119/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-245" class="submenu-aim sublevel selected current current-leaf"><li class="submenu"><a href="/web/20210127171119/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-246" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/"> VLT Instruments <span class="desktop-children topmenu-arrow fa 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</a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/fors/"> FORS1 and FORS2 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/gravity/"> GRAVITY </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/hawk-i/"> HAWK-I </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/isaac/"> ISAAC </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/kmos/"> KMOS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/mad/"> MAD </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/matisse/"> MATISSE </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/midi/"> MIDI </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/moons/"> MOONS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/muse/"> MUSE </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naco/"> NACO </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naomi/"> NAOMI </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/pionier/"> PIONIER </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sinfoni/"> SINFONI </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sphere/"> SPHERE </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/uves/"> UVES </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vimos/"> VIMOS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/visir/"> VISIR </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/x-shooter/"> X-shooter </a></li><li class=""><a href="/web/20210127171119/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/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vinci/"> VINCI </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-275" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/antu/"> Antu </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/kueyen/"> Kueyen </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/melipal/"> Melipal </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/yepun/"> Yepun </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/auxiliarytelescopes/"> Auxiliary Telescopes </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-281" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210127171119/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-282" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/mirror/"> The VISTA mirror </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/camera/"> VIRCAM </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/4most/"> 4MOST </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/surveys/"> The VISTA surveys </a></li><li class=""><a href="/web/20210127171119/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/20210127171119/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-288" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/mirror/"> The VST mirrors </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/camera/"> OmegaCAM </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/surveys/"> The VST surveys </a></li></ul></li></ul></li><li class=" current current-leaf"><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/"> SPECULOOS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/ngts/"> NGTS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/paranal-observatory/cta/"> Cherenkov Telescope Array </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-295" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210127171119/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-296" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/swedish/simba/"> SIMBA </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-298" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/ntt/efosc2/"> EFOSC2 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/ntt/emmi/"> EMMI </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/ntt/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/ntt/sofi/"> SOFI </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/ntt/soxs/"> SOXS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/ntt/susi2/"> SUSI and SUSI2 </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-305" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/adonis/"> ADONIS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/caspec/"> CASPEC </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/harps/"> HARPS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/mefos/"> MEFOS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/nirps/"> NIRPS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/optopus/"> OPTOPUS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/timmi2/"> TIMMI/2 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/36-infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/36-standard-photometer/"> Standard Photometer </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/infrared-specklegraph/"> Infrared Specklegraph </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/infrared-speckle-interferometer/"> Infrared Speckle Interferometer </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/36/efosc/"> EFOSC </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-319" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/mpg22/feros/"> FEROS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/mpg22/grond/"> GROND </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/mpg22/irac2/"> IRAC & IRAC2 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/mpg22/pisco/"> PISCO </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/mpg22/wfi/"> WFI </a></li><li class=""><a href="/web/20210127171119/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/20210127171119/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-326" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/swiss/coralie/"> CORALIE </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/rem/"> Rapid Eye Mount telescope </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/trappist/"> TRAnsiting Planets and PlanetesImals Small Telescope–South </a></li><li class="submenu"><a href="/web/20210127171119/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-330" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/danish154/coravel/"> CORAVEL </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/danish154/dfosc/"> DFOSC </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/danish154/ccd/"> CCD camera </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/danish154/hb-photometer/"> Hβ Photometer </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/danish154/two-channel-photometer/"> Two-Channel Photometer </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/danish154/four-channel-photometer/"> Four-Channel Photometer </a></li><li class=""><a href="/web/20210127171119/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/20210127171119/https://www.eso.org/public/teles-instr/lasilla/tarot/"> Télescope à Action Rapide pour les Objets Transitoires </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/1mschmidt/"> ESO 1-metre Schmidt telescope </a></li><li class="submenu"><a href="/web/20210127171119/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-340" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/152metre/bandc/"> Boller and Chivens Spectrograph </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/152metre/coude/"> Coudé Spectrograph </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/152metre/echelec/"> ECHELEC </a></li><li class=""><a href="/web/20210127171119/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/20210127171119/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-345" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/1metre/fideos/"> FIDEOS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/1metre/infrared-photometer/"> Infrared Photometer </a></li><li class=""><a href="/web/20210127171119/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/20210127171119/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-349" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/05metre/single-channel-photometer/"> Single-Channel Photometer </a></li><li class=""><a href="/web/20210127171119/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/20210127171119/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-352" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/coude/ces/"> CES </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/marly/"> MarLy 1-metre telescope </a></li><li class="submenu"><a href="/web/20210127171119/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-355" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/09metre/walraven/"> Walraven Photometer </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/t70/"> Swiss T70 telescope </a></li><li class="submenu"><a href="/web/20210127171119/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-358" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-scanner/"> Bochum Scanner </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-photometer/"> Bochum Photometer </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-361" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/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/20210127171119/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/20210127171119/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/20210127171119/https://www.eso.org/public/teles-instr/lasilla/gpo/"> Grand Prisme Objectif telescope </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/swiss04/"> Swiss 0.4-metre telescope </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/marseille/"> Marseille 0.36-metre telescope </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/grb/"> GRB Monitoring System </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/mascara/"> MASCARA </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/blackgem/"> BlackGEM </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/extra/"> ExTrA </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/test-bed/"> Test-Bed Telescope </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-373" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/artemis/"> ArTéMiS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/laboca/"> LABOCA </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/saboca/"> SABOCA </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/sepia/"> SEPIA </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/apex-2a/"> APEX–2A </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/aszca/"> ASZCa </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/champ-plus/"> CHAMP+ </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/flash/"> FLASH </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/flash-plus/"> FLASH+ </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/mpi_11thz/"> MPI_1.1THz </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/p-artemis/"> P-ArTéMiS </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/pi230/"> PI230 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/polka/"> PolKa </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/apex/shefi/"> SHeFI </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-388" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/alma/antennas/"> Antennas </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/alma/transporters/"> Transporters </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/alma/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/alma/receiver-bands/"> Receiver Bands </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/alma/residencia/"> ALMA Residencia </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/elt/"> ELT </a></li><li class="submenu"><a href="/web/20210127171119/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-395" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/technology/active_optics/"> Active Optics </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/technology/adaptive_optics/"> Adaptive Optics </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/technology/ifu/"> Integral Field Units </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/technology/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/technology/spectroscopy/"> Spectroscopy </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/teles-instr/instruments/"> Instruments </a></li> </ul> </div> </div> </li> <li><a href="/web/20210127171119/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 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href="/web/20210127171119/https://www.eso.org/public/events/special-evt/awesome-universe/venues/"> List of venues </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/awesome-universe/organisers/"> For Exhibitors </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/iya2009/"> IYA 2009 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/100ha/"> 100 Hours of Astronomy </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/theeye/"> The Eye 3D </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/imax-hidden-universe/"> IMAX® 3D Film Hidden Universe </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/openhouse11/"> Open House Day 2011 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/openhouse09/"> Open House Day 2009 (German) </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/outreach/bond/"> Bond at Paranal </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/lndw-2007eng/"> Long Night of Science 2007 </a></li><li class="submenu"><a href="/web/20210127171119/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-461" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/openhouse/ohd06-winnerslist/"> List of Prize Winners </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/openhouse/tdot06/"> Deutsche Fassung </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/openhouse/tdot06-gewinnerliste/"> Liste der Preisgewinner </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/pt-011203/"> Public Talks 2003 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/special-evt/eso40years/"> ESO 40 Years (1962 - 2002) </a></li></ul></li><li class="submenu"><a href="/web/20210127171119/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-467" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/exhibitions/perma_exhibitions/"> ESO Permanent Exhibitions </a></li><li class=""><a href="https://web.archive.org/web/20210127171119/http://www.esof.eu/"> EuroScience Open 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href="/web/20210127171119/https://www.eso.org/public/events/astro-evt/hale-bopp/"> Comet Hale Bopp - 1994 </a></li></ul></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/events/seminars/"> Astronomy Communication Seminars </a></li> </ul> </div> </div> </li> <li><a href="/web/20210127171119/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-485" class="submenu-aim"> <li class="submenu"><a href="/web/20210127171119/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-486" class="submenu-aim sublevel"><li class=""><a href="/web/20210127171119/https://www.eso.org/public/products/education/"> 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href="/web/20210127171119/https://www.eso.org/public/outreach/eduoff/teacherschools/"> Teacher Schools </a></li><li class="submenu"><a href="/web/20210127171119/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-494" class="submenu-aim sublevel"><li class=""><a href="https://web.archive.org/web/20210127171119/http://www.eaae-astronomy.org/catchastar/cas2013"> Catch a Star 2013 </a></li><li class=""><a href="https://web.archive.org/web/20210127171119/http://www.eaae-astronomy.org/catchastar/cas2011"> Catch a Star 2011 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/outreach/eduoff/cas/cas2008/"> Catch a Star 2008 </a></li><li class=""><a href="/web/20210127171119/https://www.eso.org/public/outreach/eduoff/cas/cas2007/"> Catch a Star 2007 </a></li><li 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save page :( Please try again. </div> </div> <div class="page-content"> <div id="editable-content"> <h1>SPECULOOS Southern Observatory</h1> <h3>The Search for habitable Planets EClipsing ULtra-cOOl Stars — Finding Earth-like planets around tiny, dim stars</h3> <p><a href="/web/20210127171119/https://www.eso.org/public/images/speculoos3/"><img src="/web/20210127171119im_/https://www.eso.org/public/archives/static/teles-instr/vlt/images/speculoos3_pano.jpg" border="0"/></a></p> <div class="row"> <div class="col-md-8"> <p>The brilliant luminosity of most stars makes it extremely difficult to spot Earth-sized planets in orbit around them. Smaller, dimmer stars, however, can offer a more accessible target for planet-hunting astronomers and permit the detailed characterisation of any planets found.</p> <p>The <a href="https://web.archive.org/web/20210127171119/https://www.speculoos.uliege.be/cms/c_4259452/en/">Search for habitable Planets EClipsing ULtra-cOOl Stars</a> (SPECULOOS, its name inspired by the <a href="https://web.archive.org/web/20210127171119/https://en.wikipedia.org/wiki/Speculaas">sweet treat</a>) is a project sited at ESO’s <a href="https://web.archive.org/web/20210127171119/http://eso.org/paranal">Paranal Observatory</a> in Chile’s Atacama desert (there is a sister project in the northern hemisphere). Its mission is to detect terrestrial exoplanets around nearby ultracool stars — of spectral type M7 and later — and <a href="https://web.archive.org/web/20210127171119/https://en.wikipedia.org/wiki/Brown_dwarf">brown dwarfs</a>. The facility at Paranal, called the SPECULOOS Southern Observatory, comprises four robotic telescopes of <a href="https://web.archive.org/web/20210127171119/https://en.wikipedia.org/wiki/Ritchey%E2%80%93Chr%C3%A9tien_telescope">Ritchey-Chrétien</a> design, each with a one metre primary mirror and cameras that are highly sensitive in the near-infrared. While this radiation is slightly beyond what human eyes can detect, it is the primary emission from ultracool stars and brown dwarfs. The telescopes are named after four of Jupiter’s moons: Io, Europa, Ganymede and Callisto.</p> <p>The forerunners to SPECULOOS are the two <a href="/web/20210127171119/https://www.eso.org/public/teles-instr/lasilla/trappist/">TRAnsiting Planets and PlanetesImals Small Telescopes</a> (TRAPPIST) — one at ESO’s <a href="https://web.archive.org/web/20210127171119/http://eso.org/lasilla">La Silla Observatory</a> in Chile and another at <a href="https://web.archive.org/web/20210127171119/http://moss-observatory.org/">Oukaïmden Observatory</a> in Morocco. SPECULOOS will survey ten times as many red dwarfs as TRAPPIST does, and it it is expected to discover at least a dozen systems similar to TRAPPIST-1, which was <a href="https://web.archive.org/web/20210127171119/https://www.eso.org/public/news/eso1706/">recently shown</a> to contain at least seven Earth-sized worlds, the most discovered in any system at the time of writing.</p> <p>SPECULOOS aims to find the most suitable terrestrial planets for detailed atmospheric characterisation — including the potential detection of biosignatures — by future giant observatories, such as ESO’s 39-metre <a href="https://web.archive.org/web/20210127171119/http://www.eso.org/public/teles-instr/elt/">Extremely Large Telescope</a> and the <a href="https://web.archive.org/web/20210127171119/https://jwst.nasa.gov/">NASA/ESA James Webb Space Telescope</a>.</p> <h3>Science goals</h3> <p>The mission for SPECULOOS is to detect terrestrial planets as they <a href="https://web.archive.org/web/20210127171119/https://en.wikipedia.org/wiki/Transit_(astronomy)">transit</a> across small, cool stars in the solar neighbourhood, leading to a tiny, regular dimming in the star’s brightness. Exoplanets discovered by this method can be studied in great detail. This includes making precise measurements of their orbital parameters, mass and radius, and the analysis of their possible atmospheres.</p> <p>While only large exoplanets can currently be studied in detail, powerful future telescopes will have the capability to perform detailed studies of Earth-like exoplanets around small, dim nearby stars. Theory predicts that these ultracool stars should host a large population of close-by, potentially habitable exoplanets. SPECULOOS is therefore designed to detect such planets orbiting in the habitable zone around the nearest 1000 ultracool stars and brown dwarfs, and to make it possible to explore the diversity of atmospheres and climates on these exoplanets and search for traces of biological activity.</p> <h3>More about SPECULOOS</h3> <ul><li>Read more about this telescope on the <a href="https://web.archive.org/web/20210127171119/https://www.speculoos.uliege.be/cms/c_4259452/en/">SPECULOOS website</a></li></ul> </div> <div class="col-md-4"> <table class="table table-bordered" width="100%"> <tbody> <tr> <td> <h3>SPECULOOS</h3> <table class="table"> <tbody> <tr> <td width="60" valign="top"><strong>Name:</strong></td> <td valign="top">Search for habitable Planets EClipsing ULtra-cOOl Stars</td> </tr> <tr> <td width="30" valign="top"><strong>Site:</strong></td> <td valign="top">Cerro Paranal</td> </tr> <tr> <td width="30" valign="top"><strong>Altitude:</strong></td> <td valign="top">2518 m</td> </tr> <tr> <td valign="top"><strong>Enclosure:</strong></td> <td valign="top">Hemispherical Domes</td> </tr> <tr> <td valign="top"><strong>Type:</strong></td> <td valign="top">Near-infrared survey telescope</td> </tr> <tr> <td valign="top"><strong>Optical design:</strong></td> <td valign="top">Ritchey-Chrétien F/8 with 2 lenses corrector</td> </tr> <tr> <td valign="top"><strong>Diameter. Primary M1:</strong></td> <td valign="top">4 x 1-m</td> </tr> <tr> <td valign="top"><strong>Material. Primary M1:</strong></td> <td valign="top">ZERODUR</td> </tr> <tr> <td valign="top"><strong>Diameter. Secondary M2:</strong></td> <td valign="top">4 x 0.286-m</td> </tr> <tr> <td valign="top"><strong>Material. Secondary M2:</strong></td> <td valign="top">ZERODUR</td> </tr> <tr> <td valign="top"><strong>Mount:</strong></td> <td valign="top">German Equatorial Mount (with no meridian flip)</td> </tr> <tr> <td valign="top"><strong>First Light date:</strong></td> <td valign="top">December 2017</td> </tr> <tr> <td valign="top"><strong>Active Optics:</strong></td> <td valign="top">No</td> </tr> <tr> <td valign="top"><strong>Images taken with SPECULOOS:</strong></td> <td valign="top"><a href="/web/20210127171119/https://www.eso.org/public/images/archive/search/?adv=&facility=93 ">Link</a></td> </tr> <tr> <td valign="top"><strong>Images of SPECULOOS:</strong></td> <td valign="top"><a href="/web/20210127171119/https://www.eso.org/public/images/archive/search/?adv=&subject_name=SPECULOOS">Link</a></td> </tr> <tr> <td valign="top"><strong>Videos of SPECULOOS:</strong></td> <td valign="top"><a href="/web/20210127171119/https://www.eso.org/public/videos/archive/search/?adv=&subject_name=SPECULOOS">Link</a></td> </tr> <tr> <td valign="top"><strong>Press releases with SPECULOOS:</strong></td> <td valign="top"><a href="/web/20210127171119/https://www.eso.org/public/news/archive/search/?adv=&facility=93">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/20210127171119/mailto:information@eso.org">Send us your comments!</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20210127171119/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/20210127171119/https://www.cdn77.com/">Accelerated by CDN77</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20210127171119/https://www.eso.org/public/about-eso/privacy/">Terms & Conditions</a> </div> </div> <link href="/web/20210127171119cs_/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/20210127171119js_/https://www.eso.org/public/archives/djp/js/main.097c0244ddc7.js" charset="utf-8"></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/20210127171119/https://www.facebook.com/sharer/sharer.php?u=https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/" 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/20210127171119/http://twitter.com/intent/tweet?url=https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/&text=SPECULOOS Southern Observatory&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/20210127171119/http://pinterest.com/pin/create/button/?url=https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/&media=&description=SPECULOOS Southern Observatory" 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/20210127171119/mailto:%20?subject=ESO — SPECULOOS Southern Observatory&body=https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/" 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="lu14RoJhODQX08FlGZoNcLS6aAGj7JICwnIFPO8Us4oSYruHJCRkGWWN2uV9ZwX4"/> </body> </html>

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