ADONIS | ESO

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href="/web/20210414105123/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/20210414105123/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/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/4lgsf/"> 4LGSF </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/amber/"> AMBER </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires/"> CRIRES </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires+/"> CRIRES+ </a></li><li class=""><a 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href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/kmos/"> KMOS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/mad/"> MAD </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/matisse/"> MATISSE </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/midi/"> MIDI </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/moons/"> MOONS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/muse/"> MUSE </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/kueyen/"> Kueyen </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/melipal/"> Melipal </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/yepun/"> Yepun </a></li></ul></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/auxiliarytelescopes/"> Auxiliary Telescopes </a></li></ul></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/mirror/"> The VISTA mirror </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/camera/"> VIRCAM </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/4most/"> 4MOST </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/surveys/"> The VISTA surveys </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/mirror/"> The VST mirrors </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/camera/"> OmegaCAM </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/"> SPECULOOS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/ngts/"> NGTS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/paranal-observatory/cta/"> Cherenkov Telescope Array </a></li></ul></li><li class="submenu current"><a href="/web/20210414105123/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"><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/swedish/simba/"> SIMBA </a></li></ul></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/ntt/efosc2/"> EFOSC2 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/ntt/emmi/"> EMMI </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/ntt/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/ntt/sofi/"> SOFI </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/ntt/soxs/"> SOXS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/ntt/susi2/"> SUSI and SUSI2 </a></li></ul></li><li class="submenu current"><a href="/web/20210414105123/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 selected current current-leaf"><li class=" current current-leaf"><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/adonis/"> ADONIS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/caspec/"> CASPEC </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/harps/"> HARPS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/mefos/"> MEFOS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/nirps/"> NIRPS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/optopus/"> OPTOPUS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/timmi2/"> TIMMI/2 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/36-infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/36-standard-photometer/"> Standard Photometer </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/infrared-specklegraph/"> Infrared Specklegraph </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/infrared-speckle-interferometer/"> Infrared Speckle Interferometer </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/efosc/"> EFOSC </a></li></ul></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/mpg22/feros/"> FEROS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/mpg22/grond/"> GROND </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/mpg22/irac2/"> IRAC & IRAC2 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/mpg22/pisco/"> PISCO </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/mpg22/wfi/"> WFI </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/swiss/coralie/"> CORALIE </a></li></ul></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/rem/"> Rapid Eye Mount telescope </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/trappist/"> TRAnsiting Planets and PlanetesImals Small Telescope–South </a></li><li class="submenu"><a href="/web/20210414105123/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"><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/danish154/coravel/"> CORAVEL </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/danish154/dfosc/"> DFOSC </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/danish154/ccd/"> CCD camera </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/danish154/hb-photometer/"> Hβ Photometer </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/danish154/two-channel-photometer/"> Two-Channel Photometer </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/danish154/four-channel-photometer/"> Four-Channel Photometer </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/tarot/"> Télescope à Action Rapide pour les Objets Transitoires </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/1mschmidt/"> ESO 1-metre Schmidt telescope </a></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/152metre/bandc/"> Boller and Chivens Spectrograph </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/152metre/coude/"> Coudé Spectrograph </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/152metre/echelec/"> ECHELEC </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/1metre/fideos/"> FIDEOS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/1metre/infrared-photometer/"> Infrared Photometer </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/05metre/single-channel-photometer/"> Single-Channel Photometer </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/coude/ces/"> CES </a></li></ul></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/marly/"> MarLy 1-metre telescope </a></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/09metre/walraven/"> Walraven Photometer </a></li></ul></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/t70/"> Swiss T70 telescope </a></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-scanner/"> Bochum Scanner </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-photometer/"> Bochum Photometer </a></li></ul></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/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/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/lasilla/gpo/"> Grand Prisme Objectif telescope </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/swiss04/"> Swiss 0.4-metre telescope </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/marseille/"> Marseille 0.36-metre telescope </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/grb/"> GRB Monitoring System </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/mascara/"> MASCARA </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/blackgem/"> BlackGEM </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/extra/"> ExTrA </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/test-bed/"> Test-Bed Telescope </a></li></ul></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/apex/artemis/"> ArTéMiS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/laboca/"> LABOCA </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/saboca/"> SABOCA </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/sepia/"> SEPIA </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/apex-2a/"> APEX–2A </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/aszca/"> ASZCa </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/champ-plus/"> CHAMP+ </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/flash/"> FLASH </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/flash-plus/"> FLASH+ </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/mpi_11thz/"> MPI_1.1THz </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/p-artemis/"> P-ArTéMiS </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/pi230/"> PI230 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/polka/"> PolKa </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/apex/shefi/"> SHeFI </a></li></ul></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/alma/antennas/"> Antennas </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/alma/transporters/"> Transporters </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/alma/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/alma/receiver-bands/"> Receiver Bands </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/alma/residencia/"> ALMA Residencia </a></li></ul></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/elt/"> ELT </a></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/teles-instr/technology/active_optics/"> Active Optics </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/technology/adaptive_optics/"> Adaptive Optics </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/technology/ifu/"> Integral Field Units </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/technology/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/technology/spectroscopy/"> Spectroscopy </a></li></ul></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/instruments/"> Instruments </a></li> </ul> </div> </div> </li> <li><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/science/top10/"> ESO Top 10 Astronomical Discoveries </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/science/exoplanets/"> Exoplanets </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/science/gravitationalwaves/"> Gravitational Wave Sources </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/science/gc/"> Black Hole at the Centre of our Galaxy </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/science/grb/"> Gamma-Ray Bursts </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/science/archive/"> Science Archive </a></li> </ul> </div> </div> </li> <li><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/events/press-evt/"> Press Events </a></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/announcements/ann18065/"> Open House Day 2018 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/special-evt/asteroid-day/"> Asteroid Day </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/special-evt/openhouse17/"> Open House Day 2017 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/announcements/ann16071/"> Open House Day 2016 </a></li><li class=""><a 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href="/web/20210414105123/https://www.eso.org/public/outreach/bond/"> Bond at Paranal </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/special-evt/lndw-2007eng/"> Long Night of Science 2007 </a></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/events/special-evt/openhouse/ohd06-winnerslist/"> List of Prize Winners </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/special-evt/openhouse/tdot06/"> Deutsche Fassung </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/special-evt/openhouse/tdot06-gewinnerliste/"> Liste der Preisgewinner 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class=""><a href="https://web.archive.org/web/20210414105123/https://aas.org/meetings/aas227"> AAS Winter 2016 </a></li></ul></li><li class="submenu"><a href="/web/20210414105123/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/20210414105123/https://www.eso.org/public/events/astro-evt/solareclipse2019/"> Total Solar Eclipse 2019 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/mcnaught2007/"> The Comet McNaught 2007 </a></li><li class=""><a href="/web/20210414105123/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/20210414105123/http://www.vt-2004.org/"> The Venus Transit - 08.11.2004 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/leonids99/"> The Leonids - 17.11.1999 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/eclipse99/"> Solar Eclipse at ESO HQ - 11.08.1999 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/leonids98/"> The Leonids - 11.1998 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/pathfinder/"> Mars Pathfinder - 1997 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/hyakutake/"> Comet Hyakutake - 1997 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/sl9/"> SL-9 and Jupiter - 1994 </a></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/astro-evt/hale-bopp/"> Comet Hale Bopp - 1994 </a></li></ul></li><li class=""><a href="/web/20210414105123/https://www.eso.org/public/events/seminars/"> Astronomy Communication Seminars </a></li> </ul> </div> </div> </li> <li><a href="/web/20210414105123/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/20210414105123/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/20210414105123/https://www.eso.org/public/products/education/"> Educational Material </a></li><li class=""><a href="https://web.archive.org/web/20210414105123/http://www.scienceinschool.org/" 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this site </a></li> </ul> </div> </div> </li> </ul> </div> </nav> <div id="content" class=""> <div id="eso-side-logo"> <a href="/web/20210414105123/https://www.eso.org/public/"> <div data-spy="affix" class="affix"> <div class="sprites-esologo"></div> <span>European<br>Southern<br>Observatory</span> </div> </a> </div> <div class="container " id="body"> <div class="row no-page"> <div class="col-md-12"> </div> </div> <div class="row page"> <div class="col-md-12 one-column"> <div id="edit-info-block"> <div id="page-edit-success" class="alert alert-success alert-dismissible" role="alert" style="display: none"> <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">×</span></button> Page saved successfully </div> <div id="page-edit-failure" class="alert alert-danger alert-dismissible" role="alert" style="display: none"> <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">×</span></button> Couldn't save page :( Please try again. </div> </div> <div class="page-content"> <div id="editable-content"> <h1>ADONIS</h1> <h2>Adaptive Optics Near Infrared System (COME ON/COME ON+)</h2>  <div class="row"> <div class="col-md-8"> <p dir="ltr">Developed by ESO and the Observatoire de Paris in 1993, ADONIS was the first “user friendly” <a href="https://web.archive.org/web/20210414105123/http://www.eso.org/public/teles-instr/technology/adaptive_optics/">Adaptive optic system</a> (AO) attached to the <a href="https://web.archive.org/web/20210414105123/http://www.eso.org/public/teles-instr/lasilla/36/">ESO 3.6-m telescope </a>at La Silla.</p> <p dir="ltr">ADONIS is the evolution of the instruments COME ON and COME ON+. They were used to demonstrate that ground-based telescopes could correct for the distortions in the images caused by atmospheric turbulence. Moreover, this three-stage evolution instrument showed that a VLT AO system was feasible.</p> <p dir="ltr">The idea behind the instrument was simple, but revolutionary in the 1980s: Real-time analysis and correction of the distortion of the stars. The information was obtained by ADONIS thanks to a series of lenslets. This lenslets were used to create individual stars images. The differences in each image were detected and compared. Then this data was used to control the shape of a small flexible mirror, which was moved by actuators — just like in <a href="https://web.archive.org/web/20210414105123/http://www.eso.org/public/teles-instr/technology/active_optics/">active optics</a>, another technology created by ESO. These movements applied to the small flexible mirror “neutralised” the distortion of the atmosphere.</p> <p dir="ltr">At the beginning, COME ON had 19 actuators and performed corrections of the mirror 100 times per second. COME ON+ added more actuators (52) and doubled the speed of the corrections. The next step was a series of upgrades to the software and hardware, but for the developers the most important thing was to have a system with no specialist operator on site, and ADONIS achieved that goal.</p> <p dir="ltr"> </p> <h2>Science highlights with ADONIS</h2> <ul> <li>Observations of low-mass eclipsing system in Orion (<a href="https://web.archive.org/web/20210414105123/https://www.eso.org/public/news/eso0133/">eso0133</a>)</li> <li>Discovery of a circumstellar disk in the Lagoon Nebula (<a href="https://web.archive.org/web/20210414105123/https://www.eso.org/public/news/eso9708/">eso9708</a>)</li> <li>ADONIS used to help discover that new 'moons' of Saturn may actually be transient objects (<a href="https://web.archive.org/web/20210414105123/https://www.eso.org/public/news/eso9603/">eso9603</a>)</li> <li>Discovery of new comet named Hale-Bopp (<a href="https://web.archive.org/web/20210414105123/https://www.eso.org/public/news/eso9520/">eso9520</a>)</li> </ul> <p dir="ltr"> </p> </div> <div class="col-md-4"> <table class="table table-bordered" width="100%"> <tbody> <tr> <td> <h3>ADONIS</h3> <p><small>The authoritative technical specifications as offered for astronomical observations are available from the <a href="https://web.archive.org/web/20210414105123/http://www.ls.eso.org/sci/facilities/lasilla/instruments/adonis/">Science Operations page</a>.</small></p> <table class="table"> <tbody> <tr> <td valign="top" width="30"><strong>Location:</strong></td> <td valign="top">La Silla</td> </tr> <tr> <td valign="top" width="30"><strong>Telescope:</strong></td> <td valign="top"><a href="/web/20210414105123/https://www.eso.org/public/teles-instr/lasilla/36/">ESO 3.6-m telescope</a></td> </tr> <tr> <td valign="top"><strong>Focus:</strong></td> <td valign="top">Cassegrain</td> </tr> <tr> <td valign="top"><strong>Type:</strong></td> <td valign="top">Infrared imager</td> </tr> <tr> <td valign="top"><strong>Wavelength range:</strong></td> <td valign="top">1–5 um</td> </tr> <tr> <td valign="top"><strong>Spatial resolution:</strong></td> <td valign="top">8”</td> </tr> <tr> <td valign="top"><strong>Spectral resolution:</strong></td> <td valign="top"> </td> </tr> <tr> <td valign="top"><strong>First light:</strong></td> <td valign="top">ESO</td> </tr> <tr> <td valign="top"><strong>Science goal:</strong></td> <td valign="top"> <p dir="ltr">Solar System <br/>Stellar Astronomy <br/>Circum- and interstellar Matter <br/>Galaxies</p> </td> </tr> <tr> <td valign="top"><strong>Images taken with the instrument:</strong></td> <td valign="top"><a href="/web/20210414105123/https://www.eso.org/public/images/archive/search/?instrument=20">Link</a></td> </tr> <tr> <td valign="top"><strong>Images of the <strong>instrument</strong>:</strong></td> <td valign="top"><a href="/web/20210414105123/https://www.eso.org/public/images/archive/search/?subject_name=ADONIS">Link</a></td> </tr> <tr> <td valign="top"><strong>Press Releases with the <strong>instrument</strong>:</strong></td> <td valign="top"><a href="/web/20210414105123/https://www.eso.org/public/news/archive/search/?published_until_year=0&published_until_day=0&description=&title=&instruments=20&subject_name=&published_since_day=0&published_since_month=0&published_until_month=0&id=&published_since_year=0">Link</a></td> </tr> <tr> <td valign="top"><strong>Consortium:</strong></td> <td valign="top"> <ul> <li>ESO</li> <li>Observatoire de Paris</li> </ul> </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/20210414105123/mailto:information@eso.org">Send us your comments!</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20210414105123/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 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