HubbleSite - The Telescope

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head><script type="text/javascript" src="https://web-static.archive.org/_static/js/bundle-playback.js?v=7YQSqjSh" charset="utf-8"></script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("http://hubblesite.org:80/the_telescope/","20160303233012","https://web.archive.org/","web","https://web-static.archive.org/_static/", "1457047812"); </script> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/banner-styles.css?v=p7PEIJWi" /> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/iconochive.css?v=3PDvdIFv" />  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"/> <title>HubbleSite - The Telescope</title> <link rel="stylesheet" href="/web/20160303233012cs_/http://hubblesite.org/global.css" type="text/css"/> <link rel="stylesheet" href="/web/20160303233012cs_/http://hubblesite.org/the_telescope/telescope_global.css" type="text/css"/> <link rel="stylesheet" href="/web/20160303233012cs_/http://hubblesite.org/index.css" type="text/css"/>     <script type="text/javascript" src="/web/20160303233012js_/http://hubblesite.org/lib/jquery-1.5.min.js"></script> <script type="text/javascript" src="/web/20160303233012js_/http://hubblesite.org/lib/hubblesite_global.js"> </script> <style type="text/css"> li#home { min-width: 63px } li#newscenter { min-width: 118px } li#gallery { min-width: 98px } li#videos { min-width: 97px } li#discoveries { min-width: 114px } li#telescope { min-width: 104px } li#astronomy { min-width: 110px } li#education { min-width: 106px } li#webb_telescope { min-width: 155px } </style>  </head> <body> <div id="container">  <div id="top-menu-container"> <div id="top-components"> <form id="search-hubblesite" style="margin-top: 6px" class="search" action="/web/20160303233012/http://hubblesite.org/search/" method="get"><span id="search-hubblesite-text">Search all of HubbleSite</span> <input class="text" type="text" name="query" value="search"/> <input id="hubblesite-search-button" onmouseover="this.src='/graphics/rollover_arrowcir.gif'" onmouseout="this.src='/the_telescope/graphics/telescope_circle_arrow.gif'" class="search-arrow" type="image" src="/web/20160303233012im_/http://hubblesite.org/the_telescope/graphics/telescope_circle_arrow.gif"/> </form> <div id="hubblesite-logo"><a href="/web/20160303233012/http://hubblesite.org/"><img src="/web/20160303233012im_/http://hubblesite.org/the_telescope/graphics/telescope_nav_logo.gif" alt="HubbleSite" border="0"/></a></div> <div style="min-height: 1px" class="top-links-telescope" id="top-links-container"> <ul id="top-links"> <li id="home"><a href="/web/20160303233012/http://hubblesite.org/" class="tall">HOME</a></li> <li id="newscenter"><a href="/web/20160303233012/http://hubblesite.org/newscenter/" class="tall">NEWSCENTER</a></li> <li id="gallery"><a href="/web/20160303233012/http://hubblesite.org/gallery/" class="tall">GALLERY</a></li> <li id="videos"><a href="https://web.archive.org/web/20160303233012/http://videos.hubblesite.org/videos/science/" class="tall">VIDEOS</a></li> <li id="discoveries"><a href="/web/20160303233012/http://hubblesite.org/hubble_discoveries/">HUBBLE<br/>DISCOVERIES</a></li> <li id="telescope"><a href="/web/20160303233012/http://hubblesite.org/the_telescope/" class="current">HUBBLE<br/>TELESCOPE</a></li> <li id="astronomy"><a href="/web/20160303233012/http://hubblesite.org/explore_astronomy/">EXPLORE<br/>ASTRONOMY</a></li> <li id="education"><a href="/web/20160303233012/http://hubblesite.org/education_and_museums/">EDUCATION<br/>& MUSEUMS</a></li> <li class="spacer"> <div style="width: 3px"></div> </li> <li id="webb_telescope"><a href="/web/20160303233012/http://hubblesite.org/webb_telescope/">THE FUTURE:<br/>WEBB TELESCOPE</a></li>  </ul> </div> </div> </div>  <div id="search-section-bar"></div> <div id="container-padding"><a href="/web/20160303233012/http://hubblesite.org/the_telescope/" id="section-clicker"></a> <div id="intro-text"> How Hubble works; its past, present and future; and the people behind it. </div> <div id="nav-box-container" class="left"> <div id="hubblesite-menu-box"><ul class="level-1"><li class="active final"><a href="/web/20160303233012/http://hubblesite.org/the_telescope/">The Telescope</a><ul class="level-2"><li class="inactive "><a href="/web/20160303233012/http://hubblesite.org/the_telescope/hubble_essentials/">Hubble Essentials</a></li><li class="inactive "><a href="/web/20160303233012/http://hubblesite.org/the_telescope/nuts_.and._bolts/">Nuts & Bolts</a></li><li class="inactive "><a href="/web/20160303233012/http://hubblesite.org/the_telescope/hand-held_hubble/">Hand-Held Hubble</a></li><li class="inactive "><a href="/web/20160303233012/http://hubblesite.org/the_telescope/team_hubble/">Team Hubble</a></li></ul></li></ul></div> <a href="/web/20160303233012/http://hubblesite.org/ibooks/" id="ibooks"> <div class="link">Get the iBooks</div> </a> <style> .arrow-color-red{color:#801212}.arrow-color-purple{color:#666699}.arrow-color-lime{color:#afde51}.arrow-color-yellow,#ibooks .link{color:#ffd768}#info-box{position:absolute;width:25%;right:10px;background:#eb4;border:solid #b81 2px;font-family:"Courier New",monospace;font-size:85%;padding:10px}#info-box li{margin:5px 0}#ibooks{background:#000 url(/web/20160303233012im_/http://hubblesite.org/images/widgets/ibooks/background.jpg) no-repeat;width:170px;text-decoration:none;display:block;padding:10px;border:solid #43749b 1px;margin-top:20px}#ibooks .description{font-weight:normal;padding:10px 0}#ibooks>div{font-family:arial;font-size:13px;line-height:125%}#ibooks .link{font-weight:bold}#ibooks .background-text{text-indent:-119988px;overflow:hidden;text-align:left}#ibooks:hover{border-color:#00b2b3}#ibooks .link:hover{color:#00b2b3}#ibooks:hover .link{color:#00b2b3}#ibooks p{color:white;margin-top:195px}#ibooks .link{display:inline-block;background:url(/web/20160303233012im_/http://hubblesite.org/images/arrows/yellow.png) top right no-repeat;padding-right:20px;text-transform:uppercase;font-weight:bold;color:"inherit"}#ibooks:hover .link{background-image:url(/web/20160303233012im_/http://hubblesite.org/images/arrows/hover.png)}#ibooks .link{margin-top:200px} </style> <div class="nav-box" id="webb-box"> <a href="/web/20160303233012/http://hubblesite.org/webb_telescope/" class="nav-box-padding"> <span class="h1"><strong>The Webb Telescope</strong></span> <span class="icon webb-icon"></span> <span class="h2">NASA's Next Space Telescope</span> <span class="p"> Advanced technology drives Hubble's successor. <span class="link">Visit the Web site.</span> </span> </a> </div> </div> <div id="middle-content" class="clearfix"> <div id="middle-content-container"> <hr/> <div class="large-box content-box"> <a href="hubble_essentials/" class="large-box-padding content-box-padding"> <span class="h1"><strong>HUBBLE ESSENTIALS</strong></span><span class="h2" style="margin-bottom: 0">telescope summary</span> <span><img style="margin: 0" src="/web/20160303233012im_/http://hubblesite.org/graphics/telescope_essentials.jpg" alt="Hubble Essentials" width="488" height="162" border="0"/></span></a> </div> <hr/> <div class="small-box content-box"> <a href="nuts_.and._bolts/" class="small-box-padding content-box-padding"> <span class="h1"><strong>NUTS & BOLTS</strong></span> <img src="/web/20160303233012im_/http://hubblesite.org/graphics/telescope_nuts_bolts.jpg" alt="Nuts and Bolts" width="100" height="175" border="0" class="box-image"/> <span class="h2">telescope technology</span> <span class="p">Like to take things apart? Inside Hubble are high-tech science instruments and the electronics that keep them running. Find out what makes the telescope tick.</span> </a> </div> <hr/> <div class="small-box content-box"> <a href="team_hubble/" class="small-box-padding content-box-padding"> <span class="h1"><strong>TEAM HUBBLE</strong></span> <img class="box-image" src="/web/20160303233012im_/http://hubblesite.org/graphics/telescope_behind_the_pictures_lg.jpg" alt="Team Hubble" border="0"/> <span class="h2">documentary feature</span> <span class="p">High above our atmosphere, periodic servicing missions from astronauts keep Hubble up to date and on target. Back on Earth, Hubble's "ground crew" tells the telescope what to do.</span> </a> </div> <hr/> <div class="large-box content-box"> <a href="hand-held_hubble/" class="large-box-padding content-box-padding"> <span class="h1"><strong>HAND-HELD HUBBLE</strong></span> <img src="/web/20160303233012im_/http://hubblesite.org/graphics/telescope_hand_held_hubble_sm.gif" alt="Hand-Held Hubble" width="100" height="100" border="0" class="box-image"/> <span class="h2">build a model</span> <span class="p">Want a Hubble of your own? Now you can build a scale model of the telescope with inexpensive parts from local hardware and craft stores.</span> </a> </div> </div>  <div class="small-box content-box" id="stay-connected-promo"> <div class="small-box-padding content-box-padding"> <span class="h1">Stay Connected</span> <div class="clearfix"> <div id="stay-connected-intro"> <span>Access Hubble Images, news and updates anytime, anywhere.</span> <div><a href="/web/20160303233012/http://hubblesite.org/newscenter/stay_connected/">Stay Connected</a></div> </div> <div id="stay-connected-email"> <strong>E-mail newsletter</strong> <form action="https://web.archive.org/web/20160303233012/http://hubblesite.org/newscenter/stay_connected/inbox_astronomy/subscribe.php" method="post"> <input type="hidden" name="action" value="subscribe"> <input type="hidden" name="name" value="Anonymous"> <input type="text" name="email" value="Enter your e-mail address here" size="40"> </form><br/>  </div> <div id="stay-connected-external-services"> <strong>Or visit us at:</strong> <div> <a class="facebook" href="https://web.archive.org/web/20160303233012/http://www.facebook.com/HubbleTelescope">Facebook</a> <a class="twitter" href="https://web.archive.org/web/20160303233012/http://twitter.com/HubbleTelescope">Twitter</a> <a class="youtube" href="https://web.archive.org/web/20160303233012/http://www.youtube.com/HubbleSiteChannel">YouTube</a> <a class="itunes" href="https://web.archive.org/web/20160303233012/http://itunes.apple.com/us/app/hubblesite/id416759844?mt=8&ls=1">iTunes Store</a> <a class="rss" href="https://web.archive.org/web/20160303233012/http://hubblesite.org/newscenter/hubble_on_the_go/">RSS</a> <a class="googleplus" href="https://web.archive.org/web/20160303233012/https://plus.google.com/104933578966497599647/posts">RSS</a> <a class="pinterest" href="https://web.archive.org/web/20160303233012/http://pinterest.com/hubblesite">Pinterest</a> <a class="flickr" href="https://web.archive.org/web/20160303233012/https://www.flickr.com/photos/40523828@N07/">Pinterest</a> </div> </div> </div> </div> </div> <link rel="stylesheet" href="/web/20160303233012cs_/http://hubblesite.org/includes/site-promos/stay_connected/style.css" type="text/css"/> <script type="text/javascript"> $(function() { $('#stay-connected-email input').bind('focus click', function() { if (!$(this).hasClass('active')) { $(this).val(''); $(this).addClass('active'); } }); }); </script> <span style="padding: 0px; margin: 0px; visibility: none; display: block; font-size: 0px; height: 0px; overflow: none">         </span> <div id="footer" class="clearfix inside-body"> <img src="/web/20160303233012im_/http://hubblesite.org/graphics/home_nasa.gif" alt="NASA" border="0" align="right"/> <a href="/web/20160303233012/http://hubblesite.org/search/">search</a> | <a href="/web/20160303233012/http://hubblesite.org/site_map/">site map</a> | <a href="/web/20160303233012/http://hubblesite.org/reference_desk/">reference desk</a> | <a href="/web/20160303233012/http://hubblesite.org/about_us/">about us</a> | <a href="/web/20160303233012/http://hubblesite.org/about_us/contact_us/">contact us</a> | <a href="/web/20160303233012/http://hubblesite.org/about_us/copyright.php">copyright</a> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-2505395-1']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 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HubbleSite - The Telescope