Press Releases 1991

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Heckmann </a></li></ul></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/committees.html"> ESO's Governing Bodies </a></li><li class="submenu"><a href="/web/20210131142848/https://www.eso.org/public/about-eso/memberstates/"> Member States <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-16" class="submenu-aim sublevel"><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/memberstates/austrianinvolvement/"> Austria </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/memberstates/belgianinvolvement/"> Belgium </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/memberstates/czechinvolvement/"> Czech Republic </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/memberstates/danishinvolvement/"> 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href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/garching/"> Travel to ESO Headquarters </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/vitacura/"> Travel to Vitacura Office </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/guesthouse/"> Travel to Guesthouse </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/lasilla/"> Travel to La Silla </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/laserena/"> Travel to La Serena </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/paranal/"> Travel to Paranal </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/antofagasta/"> Travel to Antofagasta </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/travel/apexsequitor/"> Travel to 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href="/web/20210131142848/https://www.eso.org/public/about-eso/eso-and-chile/"> ESO & Chile </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/dark-skies-preservation/"> Dark skies preservation </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/about-eso/privacy/"> Terms and Conditions </a></li> </ul> </div> </div> </li> <li><a href="/web/20210131142848/https://www.eso.org/public/images/">Images<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-65" class="submenu-aim"> <li class=""><a href="/web/20210131142848/https://www.eso.org/public/images/search/"> Advanced Search </a></li><li class="submenu"><a class="no-link children" href="#"> Categories <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa 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href="/web/20210131142848/https://www.eso.org/public/images/potw/archive/year/2009/"> 2009 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/images/potw/archive/year/2008/"> 2008 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/images/potw/archive/year/2007/"> 2007 </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/https://www.eso.org/public/images/archive/top100/"> Top 100 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-108" class="submenu-aim sublevel"><li class=""><a href="/web/20210131142848/https://www.eso.org/public/archives/images/top100-large.zip"> Large JPG Zip File (1.9 GB) </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/archives/images/top100-original.zip"> Original TIF Zip File (32.9 GB) </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/copyright/"> Usage of ESO Images and Videos </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/images/archive/wallpapers/"> Wallpapers </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/images/archive/zoomable/"> Zoomable </a></li> </ul> </div> </div> </li> <li><a href="/web/20210131142848/https://www.eso.org/public/videos/">Videos<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-114" class="submenu-aim"> <li class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/search/"> Advanced Search </a></li><li class="submenu"><a class="no-link children" href="#"> Categories <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa 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class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/archive/category/paranal/"> Paranal </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/archive/category/premises/"> Premises </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/archive/category/blackholes/"> Quasars and Black Holes </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/archive/category/solarsystem/"> Solar System </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/archive/category/starclusters/"> Star Clusters </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/archive/category/stars/"> Stars </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/videos/archive/category/vnr/"> Video News Releases </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/copyright/"> Usage of ESO Videos and Images </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/videoformats/"> Video Formats </a></li> </ul> </div> </div> </li> <li class="current"><a href="/web/20210131142848/https://www.eso.org/public/news/">News<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-141" class="submenu-aim selected current"> <li class="submenu current"><a href="/web/20210131142848/https://www.eso.org/public/news/"> Press Releases <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-142" class="submenu-aim sublevel selected current"><li class="submenu"><a class="no-link children" href="#"> 2021-2030 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span 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href="/web/20210131142848/https://www.eso.org/public/news/archive/year/2001/"> 2001 </a></li></ul></li><li class="submenu current"><a class="no-link children" href="#"> 1991–2000 <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-167" class="submenu-aim sublevel selected current current-leaf"><li class=""><a href="/web/20210131142848/https://www.eso.org/public/news/archive/year/2000/"> 2000 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/news/archive/year/1999/"> 1999 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/news/archive/year/1998/"> 1998 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/news/archive/year/1997/"> 1997 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/news/archive/year/1996/"> 1996 </a></li><li class=""><a 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href="/web/20210131142848/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"> <ul id="submenu-aim-244" class="submenu-aim"> <li class="submenu"><a href="/web/20210131142848/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"><li class="submenu"><a href="/web/20210131142848/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/20210131142848/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-247" class="submenu-aim sublevel"><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/4lgsf/"> 4LGSF </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/amber/"> AMBER </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires/"> CRIRES </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/espresso/"> ESPRESSO </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/eris/"> ERIS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/flames/"> FLAMES </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/fors/"> FORS1 and FORS2 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/gravity/"> GRAVITY </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/hawk-i/"> HAWK-I </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/isaac/"> ISAAC </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/kmos/"> KMOS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/mad/"> MAD </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/matisse/"> MATISSE </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/midi/"> MIDI </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/moons/"> MOONS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/muse/"> MUSE </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naco/"> NACO </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naomi/"> NAOMI </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/pionier/"> PIONIER </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sinfoni/"> SINFONI </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sphere/"> SPHERE </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/uves/"> UVES </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vimos/"> VIMOS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/visir/"> VISIR </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/x-shooter/"> X-shooter </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vinci/"> VINCI </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/antu/"> Antu </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/kueyen/"> Kueyen </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/melipal/"> Melipal </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/yepun/"> Yepun </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/auxiliarytelescopes/"> Auxiliary Telescopes </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/mirror/"> The VISTA mirror </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/camera/"> VIRCAM </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/4most/"> 4MOST </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/surveys/"> The VISTA surveys </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/mirror/"> The VST mirrors </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/camera/"> OmegaCAM </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/"> SPECULOOS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/ngts/"> NGTS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/paranal-observatory/cta/"> Cherenkov Telescope Array </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/swedish/simba/"> SIMBA </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/ntt/efosc2/"> EFOSC2 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/ntt/emmi/"> EMMI </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/ntt/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/ntt/sofi/"> SOFI </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/ntt/soxs/"> SOXS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/ntt/susi2/"> SUSI and SUSI2 </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/adonis/"> ADONIS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/caspec/"> CASPEC </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/harps/"> HARPS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/mefos/"> MEFOS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/nirps/"> NIRPS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/optopus/"> OPTOPUS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/timmi2/"> TIMMI/2 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/36-infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/36-standard-photometer/"> Standard Photometer </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/infrared-specklegraph/"> Infrared Specklegraph </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/infrared-speckle-interferometer/"> Infrared Speckle Interferometer </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/36/efosc/"> EFOSC </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/mpg22/feros/"> FEROS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/mpg22/grond/"> GROND </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/mpg22/irac2/"> IRAC & IRAC2 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/mpg22/pisco/"> PISCO </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/mpg22/wfi/"> WFI </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/swiss/coralie/"> CORALIE </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/rem/"> Rapid Eye Mount telescope </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/trappist/"> TRAnsiting Planets and PlanetesImals Small Telescope–South </a></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/danish154/coravel/"> CORAVEL </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/danish154/dfosc/"> DFOSC </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/danish154/ccd/"> CCD camera </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/danish154/hb-photometer/"> Hβ Photometer </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/danish154/two-channel-photometer/"> Two-Channel Photometer </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/danish154/four-channel-photometer/"> Four-Channel Photometer </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/tarot/"> Télescope à Action Rapide pour les Objets Transitoires </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/1mschmidt/"> ESO 1-metre Schmidt telescope </a></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/152metre/bandc/"> Boller and Chivens Spectrograph </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/152metre/coude/"> Coudé Spectrograph </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/152metre/echelec/"> ECHELEC </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/1metre/fideos/"> FIDEOS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/1metre/infrared-photometer/"> Infrared Photometer </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/05metre/single-channel-photometer/"> Single-Channel Photometer </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/coude/ces/"> CES </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/marly/"> MarLy 1-metre telescope </a></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/09metre/walraven/"> Walraven Photometer </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/t70/"> Swiss T70 telescope </a></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-scanner/"> Bochum Scanner </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-photometer/"> Bochum Photometer </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/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/20210131142848/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/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/lasilla/gpo/"> Grand Prisme Objectif telescope </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/swiss04/"> Swiss 0.4-metre telescope </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/marseille/"> Marseille 0.36-metre telescope </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/grb/"> GRB Monitoring System </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/mascara/"> MASCARA </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/blackgem/"> BlackGEM </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/extra/"> ExTrA </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/lasilla/test-bed/"> Test-Bed Telescope </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/apex/artemis/"> ArTéMiS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/laboca/"> LABOCA </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/saboca/"> SABOCA </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/sepia/"> SEPIA </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/apex-2a/"> APEX–2A </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/aszca/"> ASZCa </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/champ-plus/"> CHAMP+ </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/flash/"> FLASH </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/flash-plus/"> FLASH+ </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/mpi_11thz/"> MPI_1.1THz </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/p-artemis/"> P-ArTéMiS </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/pi230/"> PI230 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/polka/"> PolKa </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/apex/shefi/"> SHeFI </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/alma/antennas/"> Antennas </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/alma/transporters/"> Transporters </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/alma/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/alma/receiver-bands/"> Receiver Bands </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/alma/residencia/"> ALMA Residencia </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/elt/"> ELT </a></li><li class="submenu"><a href="/web/20210131142848/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/20210131142848/https://www.eso.org/public/teles-instr/technology/active_optics/"> Active Optics </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/technology/adaptive_optics/"> Adaptive Optics </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/technology/ifu/"> Integral Field Units </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/technology/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/technology/spectroscopy/"> Spectroscopy </a></li></ul></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/teles-instr/instruments/"> Instruments </a></li> </ul> </div> </div> </li> <li><a href="/web/20210131142848/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-402" class="submenu-aim"> <li class=""><a href="/web/20210131142848/https://www.eso.org/public/science/top10/"> ESO Top 10 Astronomical Discoveries </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/science/exoplanets/"> Exoplanets </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/science/gravitationalwaves/"> Gravitational Wave Sources </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/science/gc/"> Black Hole at the Centre of our Galaxy </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/science/grb/"> Gamma-Ray Bursts </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/science/archive/"> Science Archive </a></li> </ul> </div> </div> </li> <li><a href="/web/20210131142848/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-409" class="submenu-aim"> <li class=""><a href="/web/20210131142848/https://www.eso.org/public/events/press-evt/"> Press Events </a></li><li class="submenu"><a href="/web/20210131142848/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-411" class="submenu-aim sublevel"><li class=""><a href="/web/20210131142848/https://www.eso.org/public/announcements/ann18065/"> Open House Day 2018 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/events/special-evt/asteroid-day/"> Asteroid Day </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/events/special-evt/openhouse17/"> Open House Day 2017 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/announcements/ann16071/"> Open House Day 2016 </a></li><li class=""><a 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class=""><a href="https://web.archive.org/web/20210131142848/https://aas.org/meetings/aas227"> AAS Winter 2016 </a></li></ul></li><li class="submenu"><a href="/web/20210131142848/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-472" class="submenu-aim sublevel"><li class=""><a href="/web/20210131142848/https://www.eso.org/public/events/astro-evt/solareclipse2019/"> Total Solar Eclipse 2019 </a></li><li class=""><a href="/web/20210131142848/https://www.eso.org/public/events/astro-evt/mcnaught2007/"> The Comet McNaught 2007 </a></li><li class=""><a href="/web/20210131142848/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/20210131142848/http://www.vt-2004.org/"> The Venus Transit - 08.11.2004 </a></li><li 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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/20210131142848/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 class="archive-search outside"><form class="form-inline" role="form" action="/web/20210131142848/https://www.eso.org/public/news/" method="GET"><div class="form-group"><div class="input-group"><input id="id_archivesearch" type="text" value="" placeholder="Search Press Releases 1991..." name="search" class="form-control input-sm"/><span class="input-group-btn"><button class="btn btn-default btn-sm" type="submit"><span class="fa fa-search"></span></button></span></div></div></form></div> </div> </div> <div class="row no-page"> <div class="col-md-12"> <h1>Press Releases 1991 <a href="https://web.archive.org/web/20210131142848/http://feeds.feedburner.com/EsoTopNews" class="listviewrsslink"><span class="fa fa-rss"></span></a></h1> <a href="https://web.archive.org/web/20210131142848/https://www.eso.org/public/outreach/newsletters/esonews.html" class="esonews_link">Subscribe to receive news from ESO in your language!</a> <div class="row news-list"> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9110/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso_colour.jpg"> </div> <div class="news-description"> <div class="news-id">eso9110 — Science Release</div> <div class="news-title">A Ground-based Image of Minor Planet (951) Gaspra</div> <div class="news-teaser"><strong>29 October 1991</strong>: This is a ground-based photo of the first minor planet ever to be visited by a spacecraft. On October 29, 1991, the NASA spacecraft Galileo will pass minor planet no. 951 Gaspra on its way to Jupiter where it will arrive in December 1995. The distance from Gaspra to the Earth will be 410 million km at the time of the fly-by.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9109/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso_colour.jpg"> </div> <div class="news-description"> <div class="news-id">eso9109 — Science Release</div> <div class="news-title">Most Distant Cosmic Mirage?</div> <div class="news-teaser"><strong>22 October 1991</strong>: Observations with telescopes at the La Silla observatory have revealed that the image of an extremely distant quasar, known as Q1208+1011, actually consists of two images very close to each other. It is the most distant and also the brightest quasar ever observed to have a double image.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9108/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso9108a.jpg"> </div> <div class="news-description"> <div class="news-id">eso9108 — Organisation Release</div> <div class="news-title">VLT Main Structure To Be Built in Italy</div> <div class="news-teaser"><strong>24 September 1991</strong>: ESO is now awarding a major contract for its Very Large Telescope (VLT) to the "AES Consortium" of three Italian companies. It concerns the construction of the main mechanical structures of the four 8-m VLT unit telescopes, each of which will weigh more than 440 tons and yet must be machined with sub-micron precision in order to allow astronomical observations of the highest quality.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9107/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso9107a.jpg"> </div> <div class="news-description"> <div class="news-id">eso9107 — Science Release</div> <div class="news-title">Weighed and Found Too Light</div> <div class="news-teaser"><strong>24 September 1991</strong>: Observations with the 3.5-m ESO New Technology Telescope by a European group of astronomers have shown that a very compact object in an extraordinary binary star, known under the astronomical designation 88433, is most probably a neutron star and not a black hole, as previously believed by most scientists. Improved observation techniques have allowed a reliable determination of the mass of this object: it is now found to weigh less than the Sun and is therefore not massive enough to be a black hole.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> </div> <div class="row news-list"> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9106/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso9106a.jpg"> </div> <div class="news-description"> <div class="news-id">eso9106 — Science Release</div> <div class="news-title">Seventy-seven Dead Cows in the Desert</div> <div class="news-teaser"><strong>16 July 1991</strong>: The lonely Atacama desert is a perfect place to study distant celestial bodies in the space around us. The following story shows how this may be done, not only through powerful astronomical telescopes at isolated mountain-top observatories [1], but also down on the barren desert plain in a much more direct way.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9105/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso9105a.jpg"> </div> <div class="news-description"> <div class="news-id">eso9105 — Photo Release</div> <div class="news-title">Towards the Beginnings</div> <div class="news-teaser"><strong>31 May 1991</strong>: The ESO New Technology Telescope on La Silla has again proven its extraordinary abilities. Known since two years as the world's best optical telescope [1], it has now produced the "deepest" view into the distant regions of the Universe ever obtained with any ground-or space-based telescope. The new picture shows enormous numbers of extremely faint and remote galaxies whose images almost completely fill the field of view. Expressed in astronomical terms, the picture reaches beyond magnitude 29 [2].</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9104/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso_colour.jpg"> </div> <div class="news-description"> <div class="news-id">eso9104 — Organisation Release</div> <div class="news-title">The VLT Observatory at Paranal Takes Shape</div> <div class="news-teaser"><strong>26 April 1991</strong>: The decision to place the world's largest telescope, the ESO 16 metre equivalent Very Large Telescope (VLT) on the Paranal mountain in the Chilean Atacama desert [1], taken by the ESO Council on 4 December 1990, was today followed up by an important next step. During a small ceremony at the European Southern Observatory Headquarters in Garching, two major contracts were signed which will together define the future shape of the VLT Observatory and its infrastructure.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9103/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso9103a.jpg"> </div> <div class="news-description"> <div class="news-id">eso9103 — Photo Release</div> <div class="news-title">Dramatic Eruption on Comet Halley Surprises Astronomers</div> <div class="news-teaser"><strong>22 February 1991</strong>: It was early in the morning of Tuesday, February 12, and ESO astronomers Olivier Hainaut and Alain Smette [1] did not know what to believe. Observing with the Danish 1.54-metre telescope at the La Silla observatory, they had just finished a one-hour exposure of a small sky field in the constellation of Hydra (the Water Snake). This work was part of the ESO monitoring programme of famous Comet Halley and the astronomers felt that something was quite wrong.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> </div> <div class="row news-list"> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9102/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso_colour.jpg"> </div> <div class="news-description"> <div class="news-id">eso9102 — Organisation Release</div> <div class="news-title">A Flying Start for a Super Telescope: Schott Successfully Casts an 8-m Mirror Blank</div> <div class="news-teaser"><strong>6 February 1991</strong>: A test run for the manufacture of mirror blanks in the 8-metre class, for use in the world's largest optical telescope, the ESO 16-m equivalent Very Large Telescope (VLT), has been successfully performed at Schott in Mainz, Germany [1]. The test blank had a diameter of 8.6 metres and a surface area of more than 55 metres squared. This is the first time that has been possible to cast such a large glass-ceramic blank in one piece. To accomplish this impressive feat, Schott has developed a number of new technological procedures.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> <div class="col-md-3 col-sm-6 col-xs-12"> <a href="/web/20210131142848/https://www.eso.org/public/news/eso9101/"> <div class="news-wrapper"> <div class="news-image"> <img class="img-responsive" src="https://web.archive.org/web/20210131142848im_/https://cdn.eso.org/images/thumb350x/eso9101a.jpg"> </div> <div class="news-description"> <div class="news-id">eso9101 — Science Release</div> <div class="news-title">Strange New Star Appears in the Southern Sky</div> <div class="news-teaser"><strong>17 January 1991</strong>: Acting on information received from Danish scientists working with an X-ray telescope on a Soviet satellite, astronomers at the ESO La SiIla observatory in Chile have discovered a strange new star in the southern constellation of Musca (the Fly). Preliminary observations with the ESO 3.5-m New Technology Telescope indicate that the object is a nova, most probably a small, very dense star in a binary system whose brightness in a dramatic event has suddenly increased about 1000 times. The available optical and X-ray observations point to a quite unusual object.</div> </div> <div class="news-readmore">Read more</div> </div>  </a> </div> </div> <div class="row statusbar"><div class="col-md-3"> Showing 1 to 10 of 10 </div><div class="col-md-6"><div class="text-center"><ul class="pagination"><li class="active"><a href="/web/20210131142848/https://www.eso.org/public/news/archive/year/1991/list/1/">1</a></li></ul></div></div><div class="col-md-3 prev-next"></div></div><div class="row"><div class="col-md-12"></div></div> <div class="copyright"> <a href="/web/20210131142848/https://www.eso.org/public/outreach/copyright/">Usage of ESO Images, Videos, Web texts and Music</a><br/> </div> </div> </div> </div>  <div class="row footernote"> <div class="col-xs-12 col-md-3"> <a href="https://web.archive.org/web/20210131142848/mailto:information@eso.org">Send us your comments!</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20210131142848/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/20210131142848/https://www.cdn77.com/">Accelerated by CDN77</a> </div> <div class="col-xs-12 col-md-3"> <a href="/web/20210131142848/https://www.eso.org/public/about-eso/privacy/">Terms & Conditions</a> </div> </div> <link href="/web/20210131142848cs_/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/20210131142848js_/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/20210131142848/https://www.facebook.com/sharer/sharer.php?u=https://www.eso.org/public/news/archive/year/1991/" 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/20210131142848/http://twitter.com/intent/tweet?url=https://www.eso.org/public/news/archive/year/1991/&text=&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/20210131142848/http://pinterest.com/pin/create/button/?url=https://www.eso.org/public/news/archive/year/1991/&media=&description=" 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/20210131142848/mailto:%20?subject=ESO — Press Releases 1991&body=https://www.eso.org/public/news/archive/year/1991/" 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="5BaKvzmzgO1YqtesMajkO6gP2p9hnSfOm0nvNax9nMw1172yq7nA1AnECeUgpU7o"/> </body> </html>

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Press Releases 1991 | ESO