ESO Supernova Exhibition — How do telescopes work together?

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id="submenu-aim-94" class="submenu-aim"> <li class=""><a href="https://web.archive.org/web/20210917183022/https://www.eso.org/public/outreach/department/volunteers/">Volunteers </a> </li> </ul> </div> </div> </li> </ul> </div> </div> </nav> <div id="content"> <div id="supernova-side-logo"> <a href="/web/20210917183022/https://supernova.eso.org/"> <div data-spy="affix" class="affix"> <div class="sprites-es120a"></div> </div> </a> </div> <div class="container" id="body"> <div class="row page" id="content"> <div class="col-md-12 one-column"> <div class="page-content exhibition"> <h1>How do telescopes work together?</h1> <p> <div class="image-frame"> <img src="https://web.archive.org/web/20210917183022im_/https://cdn.eso.org/images/screen/eso1312a.jpg"> <div class="legend-wrapper"> <div class="credit"><strong>Credit:</strong> Clem & Adri Bacri-Normier (wingsforscience.com)/ESO</div> </div> </div> </p> <p>Interferometry combines the light gathered by individual telescopes to mimic a single, much larger telescope, providing astronomers with incredibly sharp images.</p> <div class="image-frame left" style="width: 50%"> <img src="https://web.archive.org/web/20210917183022im_/https://cdn.eso.org/images/screen/eso0111f.jpg"> <div class="legend-wrapper"> <div class="legend">Telescopic teamwork: Light from the VLT’s four Unit Telescopes and the smaller Auxiliary Telescopes can be combined to produce much sharper images.</div> <div class="credit"><strong>Credit:</strong> ESO</div> </div> </div> <div class="image-frame left" style="width: 50%"> <img src="https://web.archive.org/web/20210917183022im_/https://cdn.eso.org/images/screen/max_v507336s.jpg"> <div class="legend-wrapper"> <div class="legend">Delaying the light: Optical delay lines, using mirrors on moving carts, ensure that light from different telescopes is combined in phase.</div> <div class="credit"><strong>Credit:</strong> ESO/Max Alexander</div> </div> </div> <div class="education"> <p>Larger telescopes have better spatial resolution – the ability to see fine details. So if you can combine the light from individual telescopes to act as one (virtual) large telescope, you can obtain a much higher resolution. Owing to the geometric configuration of the telescopes and the source, the light will arrive at each individual telescope at a slightly different time. Since the signals from each telescope have to be matched up carefully, astronomers either use supercomputers or special optical systems to introduce very precise counter-delays to the light.</p> </div> <div class="image-frame left" style="width: 50%"> <img src="https://web.archive.org/web/20210917183022im_/https://cdn.eso.org/images/screen/potw1404a.jpg"> <div class="legend-wrapper"> <div class="legend">Making waves: ESO astronomer Jean- Baptiste Le Bouquin demonstrates how waves – not light waves, but water waves – can combine, or interfere, to create larger waves.</div> <div class="credit"><strong>Credit:</strong> ESO/Max Alexander</div> </div> </div> <div class="image-frame left" style="width: 50%"> <img src="https://web.archive.org/web/20210917183022im_/https://cdn.eso.org/images/screen/eso0906c.jpg"> <div class="legend-wrapper"> <div class="legend">Tunnel vision: A network of under- ground tunnels is used to guide starlight from various telescopes into the VLT Interferometer where it is combined.</div> <div class="credit"><strong>Credit:</strong> ESO</div> </div> </div> <div class="aha"> <p>By joining forces with your friends, you can accomplish much more than on your own. The same is true for telescopes. By working together they can achieve much more detailed pictures of the Universe.</p> </div> </div> </div> </div>  </div>  </div> <div id="footer-wrapper"> <div class="container" id="footer"> <div class="row"> <div class="col-md-8"> <p>The <strong>ESO Supernova Planetarium & Visitor Centre</strong> is a cooperation between the <a href="https://web.archive.org/web/20210917183022/http://www.eso.org/public/">European Southern Observatory</a> (ESO) and the <a href="https://web.archive.org/web/20210917183022/http://www.h-its.org/de/">Heidelberg Institute for Theoretical Studies</a> (HITS). The building is a donation from the <a href="https://web.archive.org/web/20210917183022/http://www.klaus-tschira-stiftung.de/">Klaus Tschira Stiftung</a> (KTS), a German foundation, and ESO runs the facility.</p> </div> <div class="col-md-4"> <a href="https://web.archive.org/web/20210917183022/http://maps.google.com/maps?q=48%C2%B015%2736.90%22N+11%C2%B040%2715.16%22E&hl=en&ie=UTF8&sll=37.0625,-95.677068&sspn=42.224734,79.013672&vpsrc=0&t=h&z=16"> <h4>ESO</h4> Karl-Schwarzschild-Str. 2, 85748<br/> Garching bei München, Germany </a> </div> </div> </div>  </div>  <script type="text/javascript">var MEDIA_URL = "/static/"</script> <script type="text/javascript" src="/web/20210917183022js_/https://supernova.eso.org/static/djp/js/base.8a4682dc5fad.js" charset="utf-8"></script>  <script> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','//web.archive.org/web/20210917183022/https://www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-1965004-11', 'auto'); ga('send', 'pageview'); </script> </body> </html>

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ESO Supernova Exhibition — How do telescopes work together?