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vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Indice</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">nascondi</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inizio</div> </a> </li> <li id="toc-Informazioni_generali" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Informazioni_generali"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Informazioni generali</span> </div> </a> <ul id="toc-Informazioni_generali-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliografia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliografia"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Bibliografia</span> </div> </a> <button aria-controls="toc-Bibliografia-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Attiva/disattiva la sottosezione Bibliografia</span> </button> <ul id="toc-Bibliografia-sublist" class="vector-toc-list"> <li id="toc-Libri" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Libri"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Libri</span> </div> </a> <ul id="toc-Libri-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Carte_celesti" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Carte_celesti"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Carte celesti</span> </div> </a> <ul id="toc-Carte_celesti-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Voci_correlate" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voci_correlate"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Indice" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Mostra/Nascondi l'indice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Mostra/Nascondi l'indice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Nebulosa Elica</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vai a una voce in un'altra lingua. Disponibile in 56 lingue" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-56" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">56 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Heliksnewel" title="Heliksnewel - afrikaans" lang="af" hreflang="af" data-title="Heliksnewel" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B3%D8%AF%D9%8A%D9%85_%D8%A7%D9%84%D8%AD%D9%84%D8%B2%D9%88%D9%86" title="سديم الحلزون - arabo" lang="ar" hreflang="ar" data-title="سديم الحلزون" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Nebulosa_de_la_H%C3%A9liz" title="Nebulosa de la Héliz - asturiano" lang="ast" hreflang="ast" data-title="Nebulosa de la Héliz" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - azerbaigiano" lang="az" hreflang="az" data-title="NGC 7293" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - bielorusso" lang="be" hreflang="be" data-title="NGC 7293" data-language-autonym="Беларуская" data-language-local-name="bielorusso" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9E%D1%85%D0%BB%D1%8E%D0%B2_(%D0%BF%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D0%B0%D1%80%D0%BD%D0%B0_%D0%BC%D1%8A%D0%B3%D0%BB%D1%8F%D0%B2%D0%B8%D0%BD%D0%B0)" title="Охлюв (планетарна мъглявина) - bulgaro" lang="bg" hreflang="bg" data-title="Охлюв (планетарна мъглявина)" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B9%E0%A7%87%E0%A6%B2%E0%A6%BF%E0%A6%95%E0%A7%8D%E0%A6%B8_%E0%A6%A8%E0%A7%80%E0%A6%B9%E0%A6%BE%E0%A6%B0%E0%A6%BF%E0%A6%95%E0%A6%BE" title="হেলিক্স নীহারিকা - bengalese" lang="bn" hreflang="bn" data-title="হেলিক্স নীহারিকা" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Nivlennad_an_Droellenn" title="Nivlennad an Droellenn - bretone" lang="br" hreflang="br" data-title="Nivlennad an Droellenn" data-language-autonym="Brezhoneg" data-language-local-name="bretone" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - bosniaco" lang="bs" hreflang="bs" data-title="NGC 7293" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Nebulosa_de_l%27H%C3%A8lix" title="Nebulosa de l'Hèlix - catalano" lang="ca" hreflang="ca" data-title="Nebulosa de l'Hèlix" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - ceceno" lang="ce" hreflang="ce" data-title="NGC 7293" data-language-autonym="Нохчийн" data-language-local-name="ceceno" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Planet%C3%A1rn%C3%AD_mlhovina_Helix" title="Planetární mlhovina Helix - ceco" lang="cs" hreflang="cs" data-title="Planetární mlhovina Helix" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Nifwl_Helics" title="Nifwl Helics - gallese" lang="cy" hreflang="cy" data-title="Nifwl Helics" data-language-autonym="Cymraeg" data-language-local-name="gallese" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Helixnebel" title="Helixnebel - tedesco" lang="de" hreflang="de" data-title="Helixnebel" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - Dimli" lang="diq" hreflang="diq" data-title="NGC 7293" data-language-autonym="Zazaki" data-language-local-name="Dimli" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9D%CE%B5%CF%86%CE%AD%CE%BB%CF%89%CE%BC%CE%B1_%CF%84%CE%B7%CF%82_%CE%88%CE%BB%CE%B9%CE%BA%CE%B1%CF%82" title="Νεφέλωμα της Έλικας - greco" lang="el" hreflang="el" data-title="Νεφέλωμα της Έλικας" data-language-autonym="Ελληνικά" data-language-local-name="greco" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Helix_Nebula" title="Helix Nebula - inglese" lang="en" hreflang="en" data-title="Helix Nebula" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - esperanto" lang="eo" hreflang="eo" data-title="NGC 7293" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Nebulosa_de_la_H%C3%A9lice" title="Nebulosa de la Hélice - spagnolo" lang="es" hreflang="es" data-title="Nebulosa de la Hélice" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Helixi_udukogu" title="Helixi udukogu - estone" lang="et" hreflang="et" data-title="Helixi udukogu" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Helize_Nebulosa" title="Helize Nebulosa - basco" lang="eu" hreflang="eu" data-title="Helize Nebulosa" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D8%AD%D8%A7%D8%A8%DB%8C_%D9%85%D8%A7%D8%B1%D9%BE%DB%8C%DA%86" title="سحابی مارپیچ - persiano" lang="fa" hreflang="fa" data-title="سحابی مارپیچ" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Helix-sumu" title="Helix-sumu - finlandese" lang="fi" hreflang="fi" data-title="Helix-sumu" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - francese" lang="fr" hreflang="fr" data-title="NGC 7293" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A2%D7%A8%D7%A4%D7%99%D7%9C%D7%99%D7%AA_%D7%94%D7%A1%D7%9C%D7%99%D7%9C" title="ערפילית הסליל - ebraico" lang="he" hreflang="he" data-title="ערפילית הסליל" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B9%E0%A5%87%E0%A4%B2%E0%A4%BF%E0%A4%95%E0%A5%8D%E0%A4%B8_%E0%A4%A8%E0%A5%80%E0%A4%B9%E0%A4%BE%E0%A4%B0%E0%A4%BF%E0%A4%95%E0%A4%BE" title="हेलिक्स नीहारिका - hindi" lang="hi" hreflang="hi" data-title="हेलिक्स नीहारिका" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - croato" lang="hr" hreflang="hr" data-title="NGC 7293" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Csiga-k%C3%B6d" title="Csiga-köd - ungherese" lang="hu" hreflang="hu" data-title="Csiga-köd" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Nebula_Heliks" title="Nebula Heliks - indonesiano" lang="id" hreflang="id" data-title="Nebula Heliks" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%89%E3%81%9B%E3%82%93%E6%98%9F%E9%9B%B2" title="らせん星雲 - giapponese" lang="ja" hreflang="ja" data-title="らせん星雲" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%B0%D0%BB%D1%83_%D1%82%D2%B1%D0%BC%D0%B0%D0%BD%D0%B4%D1%8B%D2%93%D1%8B" title="Ұлу тұмандығы - kazako" lang="kk" hreflang="kk" data-title="Ұлу тұмандығы" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%82%98%EC%84%A0_%EC%84%B1%EC%9A%B4" title="나선 성운 - coreano" lang="ko" hreflang="ko" data-title="나선 성운" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Helixniwwel" title="Helixniwwel - lussemburghese" lang="lb" hreflang="lb" data-title="Helixniwwel" data-language-autonym="Lëtzebuergesch" data-language-local-name="lussemburghese" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Sraig%C4%97s_%C5%ABkas" title="Sraigės ūkas - lituano" lang="lt" hreflang="lt" data-title="Sraigės ūkas" data-language-autonym="Lietuvių" data-language-local-name="lituano" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - malgascio" lang="mg" hreflang="mg" data-title="NGC 7293" data-language-autonym="Malagasy" data-language-local-name="malgascio" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%97%D0%B0%D0%B2%D0%BE%D1%98%D0%BD%D0%B8%D1%86%D0%B0_(%D0%BC%D0%B0%D0%B3%D0%BB%D0%B8%D0%BD%D0%B0)" title="Завојница (маглина) - macedone" lang="mk" hreflang="mk" data-title="Завојница (маглина)" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Helixnevel" title="Helixnevel - olandese" lang="nl" hreflang="nl" data-title="Helixnevel" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Helikst%C3%A5ka" title="Helikståka - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Helikståka" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Helixt%C3%A5ken" title="Helixtåken - norvegese bokmål" lang="nb" hreflang="nb" data-title="Helixtåken" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Mg%C5%82awica_%C5%9Alimak" title="Mgławica Ślimak - polacco" lang="pl" hreflang="pl" data-title="Mgławica Ślimak" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A7%DA%A9%DA%BE_%D8%A8%D8%AF%D9%84%DB%8C" title="اکھ بدلی - Western Punjabi" lang="pnb" hreflang="pnb" data-title="اکھ بدلی" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Nebulosa_de_H%C3%A9lix" title="Nebulosa de Hélix - portoghese" lang="pt" hreflang="pt" data-title="Nebulosa de Hélix" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Nebuloasa_Helix" title="Nebuloasa Helix - rumeno" lang="ro" hreflang="ro" data-title="Nebuloasa Helix" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A2%D1%83%D0%BC%D0%B0%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D1%8C_%D0%A3%D0%BB%D0%B8%D1%82%D0%BA%D0%B0" title="Туманность Улитка - russo" lang="ru" hreflang="ru" data-title="Туманность Улитка" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Helix_nebula" title="Helix nebula - Simple English" lang="en-simple" hreflang="en-simple" data-title="Helix nebula" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Slim%C3%A1k_(hmlovina)" title="Slimák (hmlovina) - slovacco" lang="sk" hreflang="sk" data-title="Slimák (hmlovina)" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - serbo" lang="sr" hreflang="sr" data-title="NGC 7293" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Helixnebulosan" title="Helixnebulosan - svedese" lang="sv" hreflang="sv" data-title="Helixnebulosan" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Helis_Bulutsusu" title="Helis Bulutsusu - turco" lang="tr" hreflang="tr" data-title="Helis Bulutsusu" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/NGC_7293" title="NGC 7293 - tataro" lang="tt" hreflang="tt" data-title="NGC 7293" data-language-autonym="Татарча / tatarça" data-language-local-name="tataro" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A2%D1%83%D0%BC%D0%B0%D0%BD%D0%BD%D1%96%D1%81%D1%82%D1%8C_%D0%A0%D0%B0%D0%B2%D0%BB%D0%B8%D0%BA" title="Туманність Равлик - ucraino" lang="uk" hreflang="uk" data-title="Туманність Равлик" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%DB%81%DB%8C%D9%84%DB%8C%DA%A9%D8%B3_%D8%B3%D8%AD%D8%A7%D8%A8%DB%8C%DB%81" title="ہیلیکس سحابیہ - urdu" lang="ur" hreflang="ur" data-title="ہیلیکس سحابیہ" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Helix_tumanligi" title="Helix tumanligi - uzbeco" lang="uz" hreflang="uz" data-title="Helix tumanligi" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbeco" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Tinh_v%C3%A2n_Xo%E1%BA%AFn_%E1%BB%90c" title="Tinh vân Xoắn Ốc - vietnamita" lang="vi" hreflang="vi" data-title="Tinh vân Xoắn Ốc" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%9E%BA%E6%97%8B%E6%98%9F%E9%9B%B2" title="螺旋星雲 - cinese" lang="zh" hreflang="zh" data-title="螺旋星雲" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E8%9E%BA%E6%97%8B%E6%98%9F%E9%9B%B2" title="螺旋星雲 - cantonese" lang="yue" hreflang="yue" data-title="螺旋星雲" data-language-autonym="粵語" data-language-local-name="cantonese" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q97017154#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica 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class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> <div id="mw-indicator-coordinates" class="mw-indicator"><div class="mw-parser-output"><span class="plainlinks nourlexpansion" id="coordinates"><a href="/wiki/Coordinate_celesti" title="Coordinate celesti">Coordinate</a>: <span typeof="mw:File"><span title="Carta celeste"><img alt="Carta celeste" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/20px-Jupiter_and_moon.png" decoding="async" width="20" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/30px-Jupiter_and_moon.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/40px-Jupiter_and_moon.png 2x" data-file-width="128" data-file-height="128" /></span></span> <a rel="nofollow" class="external text" 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.hatnote-text{font-style:italic}body:not(.skin-minerva) .mw-parser-output .hatnote{border:1px solid #CCC;display:flex;margin:.5em 0;padding:.2em .5em}body:not(.skin-minerva) .mw-parser-output .hatnote-text{padding-left:.5em}body.skin-minerva .mw-parser-output .hatnote-icon{padding-right:8px}body.skin-minerva .mw-parser-output .hatnote-icon img{height:auto;width:16px}body.skin--responsive .mw-parser-output .hatnote a.new{color:#d73333}body.skin--responsive .mw-parser-output .hatnote a.new:visited{color:#a55858}</style> <div class="hatnote noprint nota-disambigua"> <div class="hatnote-content"><span class="noviewer hatnote-icon" typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/18px-Nota_disambigua.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/27px-Nota_disambigua.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36px-Nota_disambigua.svg.png 2x" data-file-width="200" data-file-height="200" /></span></span> <span class="hatnote-text"><a href="/wiki/Aiuto:Disambiguazione" title="Aiuto:Disambiguazione">Disambiguazione</a> – "Occhio di Dio" rimanda qui. Se stai cercando il simbolo religioso-massonico, vedi <b><a href="/wiki/Occhio_della_Provvidenza" title="Occhio della Provvidenza">Occhio della Provvidenza</a></b>.</span></div> </div> <style data-mw-deduplicate="TemplateStyles:r143074810">.mw-parser-output .sinottico{background-color:#f8f9fa;border:1px solid #c8ccd1;border-spacing:0;clear:right;float:right;font-size:95%;line-height:1.4em;margin:0 0 1em 1.5em;width:280px}.mw-parser-output .sinottico caption{font-weight:bold}.mw-parser-output .sinottico>tbody>tr>th:not(:only-child),.mw-parser-output .sinottico_annidata>tbody>tr>th:not(:only-child){background-color:#f3f3f3;border-right:1px solid #e5e5e8;text-align:left;vertical-align:top}.mw-parser-output .sinottico>tbody>tr:not(:last-child)>td,.mw-parser-output .sinottico>tbody>tr:not(:last-child)>th,.mw-parser-output .sinottico_annidata>tbody>tr>td,.mw-parser-output .sinottico_annidata>tbody>tr>th{border-bottom:1px solid #e0e0e0}.mw-parser-output .sinottico>tbody>tr>td,.mw-parser-output .sinottico>tbody>tr>th:not(:only-child),.mw-parser-output .sinottico_annidata>tbody>tr>td,.mw-parser-output .sinottico_annidata>tbody>tr>th:not(:only-child){padding:.25em .4em}.mw-parser-output .sinottico>tbody>tr>td,.mw-parser-output .sinottico_annidata>tbody>tr>td{vertical-align:middle}.mw-parser-output .sinottico>tbody>tr>td>hr:only-child{margin:0.4em 0.2em}.mw-parser-output .sinottico ul{margin:0 0 0 1em;padding:0}.mw-parser-output .sinottico_annidata{border-spacing:0;margin:0 -.4em;width:calc(100% + calc(.4em*2))}.mw-parser-output .sinottico_annidata:last-child{margin-bottom:-.2em}.mw-parser-output .sinottico_annidata:last-child>tbody>tr:last-child>td,.mw-parser-output .sinottico_annidata:last-child>tbody>tr:last-child>th{border-bottom:none}.mw-parser-output .sinottico_divisione+.sinottico_divisione>th,.mw-parser-output .sinottico_testata+.sinottico_divisione>th{border-top:2px solid #f8f9fa}.mw-parser-output .sinottico_divisione th{background-color:#eeeeee;padding:.15em .4em;text-align:center}.mw-parser-output .sinottico_piede{text-align:center;font-size:90%;background:#EFEFEF}.mw-parser-output .sinottico_piede2{background-color:white;font-size:xx-small;padding-bottom:0;text-align:right}.mw-parser-output .sinottico_sottotitolo{font-size:80%}.mw-parser-output .sinottico_testata th{background-color:#dedede;font-size:116%;padding:.2em .4em;text-align:center}.mw-parser-output .sinottico_testo_centrale{text-align:center}</style><table class="infobox sinottico" summary="Tabella sinottica che riassume i principali dati del soggetto" style="width:300px"><tbody><tr class="sinottico_testata"><th colspan="2" style="background: #A0D8A0; color: black">NGC 7293<br /><span class="sinottico_sottotitolo"><a href="/wiki/Nebulosa_planetaria" title="Nebulosa planetaria">Nebulosa planetaria</a></span></th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:NGC7293_(2004).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/278px-NGC7293_%282004%29.jpg" decoding="async" width="278" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/417px-NGC7293_%282004%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b1/NGC7293_%282004%29.jpg/557px-NGC7293_%282004%29.jpg 2x" data-file-width="6145" data-file-height="6623" /></a><figcaption></figcaption></figure>Credits <a href="/wiki/Telescopio_spaziale_Hubble" title="Telescopio spaziale Hubble">HST</a>/<a href="/wiki/NASA" title="NASA">NASA</a></td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #A0D8A0; color: black">Dati osservativi<br /><small>(<a href="/wiki/Epoca_(astronomia)" title="Epoca (astronomia)">epoca</a> <a href="/wiki/J2000" class="mw-redirect" title="J2000">J2000</a>)</small></th></tr><tr><th style="width:45%"><a href="/wiki/Costellazione" title="Costellazione">Costellazione</a></th><td><a href="/wiki/Aquario_(costellazione)" title="Aquario (costellazione)">Aquario</a> </td></tr><tr><th style="width:45%"><a href="/wiki/Ascensione_retta" title="Ascensione retta">Ascensione retta</a></th><td>22<sup>h</sup> 29<sup>m</sup> 38,55<sup>s</sup><sup id="cite_ref-simbad_1-0" class="reference"><a href="#cite_note-simbad-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Declinazione_(astronomia)" title="Declinazione (astronomia)">Declinazione</a></th><td>−20° 50′ 13,6″<sup id="cite_ref-simbad_1-1" class="reference"><a href="#cite_note-simbad-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Distanza_astronomica" title="Distanza astronomica">Distanza</a></th><td>650 <a href="/wiki/Anno_luce" title="Anno luce">a.l.</a> <br /> (199 <a href="/wiki/Parsec" title="Parsec">pc</a>) </td></tr><tr><th style="width:45%"><a href="/wiki/Magnitudine_apparente" title="Magnitudine apparente">Magnitudine apparente</a> <small title="luce visibile">(V)</small></th><td>+7,6<sup id="cite_ref-simbad_1-2" class="reference"><a href="#cite_note-simbad-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><th style="width:45%"><a href="/wiki/Diametro_angolare" title="Diametro angolare">Dimensione apparente</a> <small title="luce visibile">(V)</small></th><td>25′<sup id="cite_ref-ODelletal2004_2-0" class="reference"><a href="#cite_note-ODelletal2004-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #A0D8A0; color: black">Caratteristiche fisiche</th></tr><tr><th style="width:45%">Tipo</th><td><a href="/wiki/Nebulosa_planetaria" title="Nebulosa planetaria">Nebulosa planetaria</a> </td></tr><tr><th style="width:45%">Dimensioni</th><td>2,87 <a href="/wiki/Anno_luce" title="Anno luce">a.l.</a>   </td></tr><tr><th style="width:45%"><a href="/wiki/Magnitudine_assoluta" title="Magnitudine assoluta">Magnitudine assoluta</a> <small title="luce visibile">(V)</small></th><td>6,58 </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #A0D8A0; color: black">Altre designazioni</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><a href="/wiki/New_General_Catalogue" title="New General Catalogue">NGC</a> 7293 </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background: #A0D8A0; color: black">Mappa di localizzazione</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><div style="position: relative; width: 260px; margin: auto; float: {{{allineamento}}}; clear: {{{allineamento}}};"><div style="position: absolute; left: 111px; top: 131px; padding: 0;"><span class="mw-valign-top" typeof="mw:File"><a href="/wiki/File:Cercle_rouge_100%25.svg" class="mw-file-description" title="Nebulosa Elica"><img alt="Nebulosa Elica" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Cercle_rouge_100%25.svg/15px-Cercle_rouge_100%25.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Cercle_rouge_100%25.svg/23px-Cercle_rouge_100%25.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Cercle_rouge_100%25.svg/30px-Cercle_rouge_100%25.svg.png 2x" data-file-width="200" data-file-height="200" /></a></span></div><span typeof="mw:File"><a href="/wiki/File:Aquarius_IAU.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Aquarius_IAU.svg/260px-Aquarius_IAU.svg.png" decoding="async" width="260" height="229" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Aquarius_IAU.svg/390px-Aquarius_IAU.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Aquarius_IAU.svg/520px-Aquarius_IAU.svg.png 2x" data-file-width="596" data-file-height="524" /></a></span></div> </td></tr><tr><td colspan="2" class="sinottico_piede" style="background: #A0D8A0; color: black"><a href="/wiki/Categoria:Nebulose_planetarie" title="Categoria:Nebulose planetarie">Categoria di nebulose planetarie</a> </td></tr></tbody></table><style data-mw-deduplicate="TemplateStyles:r139486644">body.skin-vector .mw-parser-output #coordinates{font-size:85%;line-height:1.5em;white-space:nowrap}</style> <p>La <b>nebulosa Elica</b> (nota anche come <b>NGC 7293</b>, <b><a href="/wiki/Catalogo_Caldwell" title="Catalogo Caldwell">C</a> 63</b> o <b>Nebulosa Helix</b> mantenendo il nome <a href="/wiki/Lingua_inglese" title="Lingua inglese">inglese</a>) è una delle <a href="/wiki/Nebulosa_planetaria" title="Nebulosa planetaria">nebulose planetarie</a> più vicine alla <a href="/wiki/Terra" title="Terra">Terra</a><sup id="cite_ref-Horaetal2006_3-0" class="reference"><a href="#cite_note-Horaetal2006-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Si trova a <span class="nowrap"><span data-sort-value="7018617135516293438♠"></span>200 <a href="/wiki/Parsec" title="Parsec">pc</a></span> o <span class="nowrap"><span data-sort-value="7018614947480717752♠"></span>650 <a href="/wiki/Anno_luce" title="Anno luce">al</a></span> dalla <a href="/wiki/Terra" title="Terra">Terra</a> nella <a href="/wiki/Aquario_(costellazione)" title="Aquario (costellazione)">costellazione dell'Aquario</a> e ha un <a href="/wiki/Diametro_angolare" title="Diametro angolare">diametro angolare</a> di circa 0,5<a href="/wiki/Grado_d%27arco" title="Grado d'arco">°</a>. È stata scoperta da <a href="/wiki/Karl_Ludwig_Harding" title="Karl Ludwig Harding">Karl Ludwig Harding</a> prima del <a href="/wiki/1824" title="1824">1824</a>. </p><p>Ha un aspetto molto simile alla <a href="/wiki/Nebulosa_Anello" title="Nebulosa Anello">nebulosa Anello</a>. È anche simile per dimensione, età e caratteristiche fisiche alla <a href="/wiki/Nebulosa_Manubrio" title="Nebulosa Manubrio">nebulosa Manubrio</a>; le significative differenze nell'aspetto sono conseguenza della relativa vicinanza e del diverso angolo da cui la si osserva<sup id="cite_ref-ODelletal2002_4-0" class="reference"><a href="#cite_note-ODelletal2002-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>. </p><p>La nebulosa Elica viene spesso chiamata l'<b>Occhio di Dio</b>, a partire almeno dal <a href="/wiki/2003" title="2003">2003</a><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Informazioni_generali">Informazioni generali</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=1" title="Modifica la sezione Informazioni generali" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=1" title="Edit section's source code: Informazioni generali"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Planetary_nebula_%26_white_dwarf_formation.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Planetary_nebula_%26_white_dwarf_formation.gif/200px-Planetary_nebula_%26_white_dwarf_formation.gif" decoding="async" width="200" height="136" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Planetary_nebula_%26_white_dwarf_formation.gif/300px-Planetary_nebula_%26_white_dwarf_formation.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/d/dc/Planetary_nebula_%26_white_dwarf_formation.gif 2x" data-file-width="352" data-file-height="240" /></a><figcaption>Animazione che mostra la formazione della nebulosa a partire da una gigante rossa.</figcaption></figure> <p>La nebulosa Elica è un esempio di una nebulosa planetaria formatasi alla fine della vita di una stella di <a href="/wiki/Sole" title="Sole">tipo solare</a>. Gli strati gassosi esterni della stella espulsi nello spazio appaiono dal nostro punto di vista come se guardassimo dall'alto un'<a href="/wiki/Elica" title="Elica">elica</a>. Il nucleo centrale della stella, destinato a diventare una <a href="/wiki/Nana_bianca" title="Nana bianca">nana bianca</a>, risplende così intensamente da rendere <a href="/wiki/Fluorescenza" title="Fluorescenza">fluorescente</a> il gas precedentemente espulso. </p><p>La nebulosa si trova a circa 650 anni luce dalla Terra nella costellazione dell'Aquario, e ha una dimensione di circa 2,5 anni luce. Le fotografie recenti di Helix sono delle composizioni di nuove immagini ottenute dallo strumento <a href="/w/index.php?title=Advanced_Camera_for_Surveys&action=edit&redlink=1" class="new" title="Advanced Camera for Surveys (la pagina non esiste)">Advanced Camera for Surveys</a> (ACS) del <a href="/wiki/Telescopio_Spaziale_Hubble" class="mw-redirect" title="Telescopio Spaziale Hubble">Telescopio Spaziale Hubble</a> e immagini con grande angolo di visuale ottenute da un telescopio da <span class="nowrap"><span data-sort-value="6999900000000000000♠"></span>0,9 <a href="/wiki/Metro" title="Metro">m</a></span> presso l'<a href="/wiki/Osservatorio_Nazionale_di_Kitt_Peak" class="mw-redirect" title="Osservatorio Nazionale di Kitt Peak">Osservatorio Nazionale di Kitt Peak</a>. </p><p>Sulla base della velocità di espansione, di <span class="nowrap"><span data-sort-value="7004310000000000000♠"></span>31 <a href="/wiki/Metro_al_secondo" title="Metro al secondo">km/s</a></span>, si stima che abbia 10 600 anni<sup id="cite_ref-ODelletal2002_4-1" class="reference"><a href="#cite_note-ODelletal2002-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Comets_Kick_up_Dust_in_Helix_Nebula_(PIA09178).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Comets_Kick_up_Dust_in_Helix_Nebula_%28PIA09178%29.jpg/240px-Comets_Kick_up_Dust_in_Helix_Nebula_%28PIA09178%29.jpg" decoding="async" width="240" height="200" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Comets_Kick_up_Dust_in_Helix_Nebula_%28PIA09178%29.jpg/360px-Comets_Kick_up_Dust_in_Helix_Nebula_%28PIA09178%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Comets_Kick_up_Dust_in_Helix_Nebula_%28PIA09178%29.jpg/480px-Comets_Kick_up_Dust_in_Helix_Nebula_%28PIA09178%29.jpg 2x" data-file-width="4279" data-file-height="3559" /></a><figcaption>Immagine della Nebulosa Elica ripresa dal <a href="/wiki/Telescopio_spaziale_Spitzer" title="Telescopio spaziale Spitzer">telescopio spaziale Spitzer</a></figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=2" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=2" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-simbad-1"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-simbad_1-0">a</a></i></sup> <sup><i><a href="#cite_ref-simbad_1-1">b</a></i></sup> <sup><i><a href="#cite_ref-simbad_1-2">c</a></i></sup></span> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/Simbad"><span style="font-style:italic;">SIMBAD Astronomical Database</span></a>, su <span style="font-style:italic;">Results for Helix Nebula</span>. <small>URL consultato il 7 dicembre 2006</small>.</cite></span> </li> <li id="cite_note-ODelletal2004-2"><a href="#cite_ref-ODelletal2004_2-0"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> O'Dell, C. R.; McCullough, Peter R.; Meixner, Margaret, <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2004AJ....128.2339O"><span style="font-style:italic;">Unraveling the Helix Nebula: Its Structure and Knots</span></a>, in <span style="font-style:italic;">The Astronomical Journal</span>, vol. 128, n. 5, 2004, pp. 2339-2356.</cite></span> </li> <li id="cite_note-Horaetal2006-3"><a href="#cite_ref-Horaetal2006_3-0"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> Hora, Joseph L.; Latter, William B.; Smith, Howard A.; Marengo, Massimo, <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2006ApJ...652..426H"><span style="font-style:italic;">Infrared Observations of the Helix Planetary Nebula</span></a>, in <span style="font-style:italic;">The Astrophysical Journal</span>, vol. 652, n. 1, 2006, pp. 426-441.</cite></span> </li> <li id="cite_note-ODelletal2002-4"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-ODelletal2002_4-0">a</a></i></sup> <sup><i><a href="#cite_ref-ODelletal2002_4-1">b</a></i></sup></span> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> O'Dell, C. R.; Balick, B.; Hajian, A. R.; Henney, W. J.; Burkert, A., <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2002AJ....123.3329O"><span style="font-style:italic;">Knots in Nearby Planetary Nebulae</span></a>, in <span style="font-style:italic;">The Astronomical Journal</span>, vol. 123, n. 6, 2002, pp. 3329-3347.</cite></span> </li> <li id="cite_note-5"><a href="#cite_ref-5"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://www.snopes.com/photos/space/eyeofgod.asp"><span style="font-style:italic;">Urban Legends Reference Pages</span></a>, su <span style="font-style:italic;">The Eye of God</span>. <small>URL consultato il 16 luglio 2007</small>.</cite></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Bibliografia">Bibliografia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=3" title="Modifica la sezione Bibliografia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=3" title="Edit section's source code: Bibliografia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Libri">Libri</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=4" title="Modifica la sezione Libri" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=4" title="Edit section's source code: Libri"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite class="citation libro" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Stephen James O'Meara, <span style="font-style:italic;">Deep Sky Companions: The Caldwell Objects</span>, Cambridge University Press, 2003, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/0-521-55332-6" title="Speciale:RicercaISBN/0-521-55332-6">0-521-55332-6</a>.</cite></li></ul> <div class="mw-heading mw-heading3"><h3 id="Carte_celesti">Carte celesti</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=5" title="Modifica la sezione Carte celesti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=5" title="Edit section's source code: Carte celesti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite class="citation web" style="font-style:normal"> Toshimi Taki, <a rel="nofollow" class="external text" href="https://web.archive.org/web/20181105182256/http://www.geocities.jp/toshimi_taki/atlas_85/atlas_85.htm"><span style="font-style:italic;">Taki's 8.5 Magnitude Star Atlas</span></a>, su <span style="font-style:italic;">geocities.jp</span>, 2005. <small>URL consultato il 7 novembre 2010</small> <small>(archiviato dall'<abbr title="http://www.geocities.jp/toshimi_taki/atlas_85/atlas_85.htm">url originale</abbr> il 5 novembre 2018)</small>.</cite> - Atlante celeste liberamente scaricabile in formato PDF.</li> <li><cite class="citation libro" style="font-style:normal"> Tirion, Rappaport, Lovi, <span style="font-style:italic;">Uranometria 2000.0 - Volume II - The Southern Hemisphere to +6°</span>, Richmond, Virginia, USA, Willmann-Bell, inc., 1987, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/0-943396-15-8" title="Speciale:RicercaISBN/0-943396-15-8">0-943396-15-8</a>.</cite></li> <li><cite class="citation libro" style="font-style:normal"> Tirion, Sinnott, <span style="font-style:italic;">Sky Atlas 2000.0 - Second Edition</span>, Cambridge, USA, Cambridge University Press, 1998, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/0-933346-90-5" title="Speciale:RicercaISBN/0-933346-90-5">0-933346-90-5</a>.</cite></li> <li><cite class="citation libro" style="font-style:normal"> Tirion, <a rel="nofollow" class="external text" href="https://archive.org/details/cambridgestaratl00wilt"><span style="font-style:italic;">The Cambridge Star Atlas 2000.0</span></a>, 3ª ed., Cambridge, USA, Cambridge University Press, 2001, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/0-521-80084-6" title="Speciale:RicercaISBN/0-521-80084-6">0-521-80084-6</a>.</cite></li></ul> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=6" title="Modifica la sezione Voci correlate" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=6" title="Edit section's source code: Voci correlate"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/New_General_Catalogue" title="New General Catalogue">New General Catalogue</a></li> <li><a href="/wiki/Nebulosa_planetaria" title="Nebulosa planetaria">Nebulosa planetaria</a></li> <li><a href="/wiki/Oggetti_non_stellari_nella_costellazione_dell%27Aquario" title="Oggetti non stellari nella costellazione dell'Aquario">Oggetti non stellari nella costellazione dell'Aquario</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=7" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=7" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><span class="plainlinks" title="commons:Category:Helix Nebula"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Helix_Nebula?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file su <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Helix_Nebula?uselang=it">Nebulosa Elica</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Nebulosa_Elica&veaction=edit&section=8" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Nebulosa_Elica&action=edit&section=8" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090528100240/http://www.ngcicproject.org/pubdb.htm"><span style="font-style:italic;">Catalogo NGC/IC online</span></a>, su <span style="font-style:italic;">ngcicproject.org</span>. <small>URL consultato il 7 settembre 2009</small> <small>(archiviato dall'<abbr title="http://www.ngcicproject.org/pubdb.htm">url originale</abbr> il 28 maggio 2009)</small>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://antwrp.gsfc.nasa.gov/apod/ap030510.html"><span style="font-style:italic;">NASA APOD - May 10, 2003 NGC 7293: The Helix Nebula</span></a>, su <span style="font-style:italic;">antwrp.gsfc.nasa.gov</span>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://www.seds.org/messier/xtra/ngc/n7293.html"><span style="font-style:italic;">SEDS: NGC 7293, the Helix Nebula</span></a>, su <span style="font-style:italic;">seds.org</span>.</cite></li> <li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.snopes.com/photos/space/eyeofgod.asp"><span style="font-style:italic;">Snopes.com; Helix Eye of God Urban Legend</span></a>, su <span style="font-style:italic;">snopes.com</span>.</cite></li> <li><cite id="CITEREFNIOviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://www.ngcicproject.org/pubdb.htm"><span style="font-style:italic;">Catalogo NGC/IC on-line</span></a>, su <span style="font-style:italic;">ngcicproject.org</span>.</cite></li> <li><cite id="CITEREFSIMviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+7293"><span style="font-style:italic;">Dati di NGC 7293 - SIMBAD</span></a>, su <span style="font-style:italic;">simbad.u-strasbg.fr</span>.</cite> (dettagli <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+7293#lab_ident">identificatori</a>, <a rel="nofollow" class="external text" href="http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+7293&submit=display+all+measurements#lab_meas">misure</a>)</li> <li><cite id="CITEREFNEDviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+7293"><span style="font-style:italic;">Dati di NGC 7293 - NASA Extragalactic Database</span></a>, su <span style="font-style:italic;">ned.ipac.caltech.edu</span>.</cite></li> <li><cite id="CITEREFSEDviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://spider.seds.org/ngc/revngcic.cgi?NGC7293"><span style="font-style:italic;">Dati di NGC 7293 - SEDS</span></a>, su <span style="font-style:italic;">spider.seds.org</span>.</cite></li> <li><cite id="CITEREFVRSviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://vizier.u-strasbg.fr/viz-bin/VizieR-S?NGC%207293"><span style="font-style:italic;">Dati di NGC 7293 - VizieR Service</span></a>, su <span style="font-style:italic;">vizier.u-strasbg.fr</span>.</cite></li> <li><cite id="CITEREFALAviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://aladin.u-strasbg.fr/alapre.pl?NGC7293"><span style="font-style:italic;">Immagini di NGC 7293 - Aladin</span></a>, su <span style="font-style:italic;">aladin.u-strasbg.fr</span>.</cite></li> <li><cite id="CITEREFSKYviaCE" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://skyview.gsfc.nasa.gov/cgi-bin/nnskcall.pl?Interface=quick&VCOORD=NGC7293&SURVEY=Digitized+Sky+Survey"><span style="font-style:italic;">Immagini di NGC 7293 - SkyView</span></a>, su <span style="font-style:italic;">skyview.gsfc.nasa.gov</span>.</cite></li></ul> <style data-mw-deduplicate="TemplateStyles:r119428068">.mw-parser-output .navNGC{background-color:#CEDAF2;border:1px solid #003399;font-size:85%;margin-left:auto;margin-right:auto}.mw-parser-output .navNGC td:last-child{padding:0 6px}</style><table class="navNGC noprint"> <tbody><tr> <td><span typeof="mw:File"><a href="/wiki/File:Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg/22px-Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg" decoding="async" width="22" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg/33px-Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg/44px-Orion_Nebula_-_Hubble_2006_mosaic_18000.jpg 2x" data-file-width="18000" data-file-height="18000" /></a></span></td> <td><b><a href="/wiki/New_General_Catalogue" title="New General Catalogue">New General Catalogue</a></b>:</td> <td><a href="/w/index.php?title=NGC_7291&action=edit&redlink=1" class="new" title="NGC 7291 (la pagina non esiste)">NGC 7291</a>  •  <a href="/w/index.php?title=NGC_7292&action=edit&redlink=1" class="new" title="NGC 7292 (la pagina non esiste)">NGC 7292</a>  •  <b>NGC 7293</b>  •  <a href="/w/index.php?title=NGC_7294&action=edit&redlink=1" class="new" title="NGC 7294 (la pagina non esiste)">NGC 7294</a>  •  <a href="/w/index.php?title=NGC_7295&action=edit&redlink=1" class="new" title="NGC 7295 (la pagina non esiste)">NGC 7295</a></td> </tr> </tbody></table> <style data-mw-deduplicate="TemplateStyles:r141815314">.mw-parser-output .navbox{border:1px solid #aaa;clear:both;margin:auto;padding:2px;width:100%}.mw-parser-output .navbox th{padding-left:1em;padding-right:1em;text-align:center}.mw-parser-output .navbox>tbody>tr:first-child>th{background:#ccf;font-size:90%;width:100%;color:var(--color-base,black)}.mw-parser-output .navbox_navbar{float:left;margin:0;padding:0 10px 0 0;text-align:left;width:6em}.mw-parser-output .navbox_title{font-size:110%}.mw-parser-output .navbox_abovebelow{background:#ddf;font-size:90%;font-weight:normal}.mw-parser-output .navbox_group{background:#ddf;font-size:90%;padding:0 10px;white-space:nowrap}.mw-parser-output .navbox_list{font-size:90%;width:100%}.mw-parser-output .navbox_list a{white-space:nowrap}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_odd{background:#fdfdfd;color:var(--color-base,black)}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_even{background:#f7f7f7;color:var(--color-base,black)}.mw-parser-output .navbox a.mw-selflink{color:var(--color-base,black)}.mw-parser-output .navbox_center{text-align:center}.mw-parser-output .navbox .navbox_image{padding-left:7px;vertical-align:middle;width:0}.mw-parser-output .navbox+.navbox{margin-top:-1px}.mw-parser-output .navbox .mw-collapsible-toggle{font-weight:normal;text-align:right;width:7em}body.skin--responsive .mw-parser-output .navbox_image img{max-width:none!important}.mw-parser-output .subnavbox{margin:-3px;width:100%}.mw-parser-output .subnavbox_group{background:#e6e6ff;padding:0 10px}@media screen{html.skin-theme-clientpref-night .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-night .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-night .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-os .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-os .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}</style><table class="navbox mw-collapsible mw-collapsed noprint metadata" id="navbox-CatalogoCaldwell" style="width:auto;"><tbody><tr><th colspan="2" style="background:#CEDAF2;"><div class="navbox_navbar"><div class="noprint plainlinks" style="background-color:transparent; padding:0; font-size:xx-small; color:var(--color-base, #000000); white-space:nowrap;"><a href="/wiki/Template:CatalogoCaldwell" title="Template:CatalogoCaldwell"><span title="Vai alla pagina del template">V</span></a> · <a href="/w/index.php?title=Discussioni_template:CatalogoCaldwell&action=edit&redlink=1" class="new" title="Discussioni template:CatalogoCaldwell (la pagina non esiste)"><span title="Discuti del template">D</span></a> · <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Template:CatalogoCaldwell&action=edit"><span title="Modifica il template. Usa l'anteprima prima di salvare">M</span></a></div></div><span class="navbox_title">Oggetti del <a href="/wiki/Catalogo_Caldwell" title="Catalogo Caldwell">Catalogo Caldwell</a></span></th></tr><tr><td colspan="2" class="navbox_list navbox_center navbox_odd">  <table class="wikitable" style="margin:0 auto; border:3px solid#CEDAF2"> <tbody><tr> <td><a href="/wiki/NGC_188" title="NGC 188">C1</a></td> <td><a href="/wiki/NGC_40" title="NGC 40">C2</a></td> <td><a href="/wiki/NGC_4236" title="NGC 4236">C3</a></td> <td><a href="/wiki/NGC_7023" title="NGC 7023">C4</a></td> <td><a href="/wiki/IC_342" title="IC 342">C5</a></td> <td><a href="/wiki/Nebulosa_Occhio_di_Gatto" title="Nebulosa Occhio di Gatto">C6</a></td> <td><a href="/wiki/NGC_2403" title="NGC 2403">C7</a></td> <td><a href="/wiki/NGC_559" title="NGC 559">C8</a></td> <td><a href="/wiki/Sh2-155" title="Sh2-155">C9</a></td> <td><a href="/wiki/NGC_663" title="NGC 663">C10</a></td> <td rowspan="11"><span typeof="mw:File"><a href="/wiki/File:Caldwell_Catalogue.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Caldwell_Catalogue.jpg/280px-Caldwell_Catalogue.jpg" decoding="async" width="280" height="310" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Caldwell_Catalogue.jpg/420px-Caldwell_Catalogue.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Caldwell_Catalogue.jpg/560px-Caldwell_Catalogue.jpg 2x" data-file-width="1000" data-file-height="1107" /></a></span> </td></tr> <tr> <td><a href="/wiki/NGC_7635" title="NGC 7635">C11</a></td> <td><a href="/wiki/NGC_6946" title="NGC 6946">C12</a></td> <td><a href="/wiki/NGC_457" title="NGC 457">C13</a></td> <td><a href="/wiki/Ammasso_Doppio_di_Perseo" title="Ammasso Doppio di Perseo">C14</a></td> <td><a href="/wiki/NGC_6826" title="NGC 6826">C15</a></td> <td><a href="/wiki/NGC_7243" title="NGC 7243">C16</a></td> <td><a href="/wiki/NGC_147" title="NGC 147">C17</a></td> <td><a href="/wiki/NGC_185" title="NGC 185">C18</a></td> <td><a href="/wiki/IC_5146" title="IC 5146">C19</a></td> <td><a href="/wiki/Nebulosa_Nord_America" title="Nebulosa Nord America">C20</a> </td></tr> <tr> <td><a href="/wiki/NGC_4449" title="NGC 4449">C21</a></td> <td><a href="/wiki/NGC_7662" title="NGC 7662">C22</a></td> <td><a href="/wiki/NGC_891" title="NGC 891">C23</a></td> <td><a href="/wiki/NGC_1275" title="NGC 1275">C24</a></td> <td><a href="/wiki/NGC_2419" title="NGC 2419">C25</a></td> <td><a href="/wiki/NGC_4244" title="NGC 4244">C26</a></td> <td><a href="/wiki/NGC_6888" title="NGC 6888">C27</a></td> <td><a href="/wiki/NGC_752" title="NGC 752">C28</a></td> <td><a href="/wiki/NGC_5005" title="NGC 5005">C29</a></td> <td><a href="/wiki/NGC_7331" title="NGC 7331">C30</a> </td></tr> <tr> <td><a href="/wiki/IC_405" title="IC 405">C31</a></td> <td><a href="/wiki/NGC_4631" title="NGC 4631">C32</a></td> <td><a href="/wiki/Nebulosa_Velo" title="Nebulosa Velo">C33</a></td> <td><a href="/wiki/Nebulosa_Velo" title="Nebulosa Velo">C34</a></td> <td><a href="/wiki/NGC_4889" title="NGC 4889">C35</a></td> <td><a href="/wiki/NGC_4559" title="NGC 4559">C36</a></td> <td><a href="/wiki/NGC_6885" title="NGC 6885">C37</a></td> <td><a href="/wiki/NGC_4565" title="NGC 4565">C38</a></td> <td><a href="/wiki/Nebulosa_Eschimese" title="Nebulosa Eschimese">C39</a></td> <td><a href="/wiki/NGC_3626" title="NGC 3626">C40</a> </td></tr> <tr> <td><a href="/wiki/Iadi" title="Iadi">C41</a></td> <td><a href="/wiki/NGC_7006" title="NGC 7006">C42</a></td> <td><a href="/wiki/NGC_7814" title="NGC 7814">C43</a></td> <td><a href="/wiki/NGC_7479" title="NGC 7479">C44</a></td> <td><a href="/wiki/NGC_5248" title="NGC 5248">C45</a></td> <td><a href="/wiki/NGC_2261" title="NGC 2261">C46</a></td> <td><a href="/wiki/NGC_6934" title="NGC 6934">C47</a></td> <td><a href="/wiki/NGC_2775" title="NGC 2775">C48</a></td> <td><a href="/wiki/Nebulosa_Rosetta" title="Nebulosa Rosetta">C49</a></td> <td><a href="/wiki/NGC_2244" title="NGC 2244">C50</a> </td></tr> <tr> <td><a href="/wiki/IC_1613" title="IC 1613">C51</a></td> <td><a href="/wiki/NGC_4697" title="NGC 4697">C52</a></td> <td><a href="/wiki/NGC_3115" title="NGC 3115">C53</a></td> <td><a href="/wiki/NGC_2506" title="NGC 2506">C54</a></td> <td><a href="/wiki/Nebulosa_Saturno" title="Nebulosa Saturno">C55</a></td> <td><a href="/wiki/NGC_246" title="NGC 246">C56</a></td> <td><a href="/wiki/NGC_6822" title="NGC 6822">C57</a></td> <td><a href="/wiki/NGC_2360" title="NGC 2360">C58</a></td> <td><a href="/wiki/NGC_3242" title="NGC 3242">C59</a></td> <td><a href="/wiki/Galassie_Antenne" title="Galassie Antenne">C60</a> </td></tr> <tr> <td><a href="/wiki/Galassie_Antenne" title="Galassie Antenne">C61</a></td> <td><a href="/wiki/NGC_247" title="NGC 247">C62</a></td> <td><a class="mw-selflink selflink">C63</a></td> <td><a href="/wiki/NGC_2362" title="NGC 2362">C64</a></td> <td><a href="/wiki/NGC_253" title="NGC 253">C65</a></td> <td><a href="/wiki/NGC_5694" title="NGC 5694">C66</a></td> <td><a href="/wiki/NGC_1097" title="NGC 1097">C67</a></td> <td><a href="/wiki/NGC_6729" title="NGC 6729">C68</a></td> <td><a href="/wiki/Nebulosa_Farfalla" title="Nebulosa Farfalla">C69</a></td> <td><a href="/wiki/NGC_300" title="NGC 300">C70</a> </td></tr> <tr> <td><a href="/wiki/NGC_2477" title="NGC 2477">C71</a></td> <td><a href="/wiki/NGC_55" title="NGC 55">C72</a></td> <td><a href="/wiki/NGC_1851" title="NGC 1851">C73</a></td> <td><a href="/wiki/NGC_3132" title="NGC 3132">C74</a></td> <td><a href="/wiki/NGC_6124" title="NGC 6124">C75</a></td> <td><a href="/wiki/NGC_6231" title="NGC 6231">C76</a></td> <td><a href="/wiki/NGC_5128" title="NGC 5128">C77</a></td> <td><a href="/wiki/NGC_6541" title="NGC 6541">C78</a></td> <td><a href="/wiki/NGC_3201" title="NGC 3201">C79</a></td> <td><a href="/wiki/Omega_Centauri" title="Omega Centauri">C80</a> </td></tr> <tr> <td><a href="/wiki/NGC_6352" title="NGC 6352">C81</a></td> <td><a href="/wiki/NGC_6193" title="NGC 6193">C82</a></td> <td><a href="/wiki/NGC_4945" title="NGC 4945">C83</a></td> <td><a href="/wiki/NGC_5286" title="NGC 5286">C84</a></td> <td><a href="/wiki/IC_2391" title="IC 2391">C85</a></td> <td><a href="/wiki/NGC_6397" title="NGC 6397">C86</a></td> <td><a href="/wiki/NGC_1261" title="NGC 1261">C87</a></td> <td><a href="/wiki/NGC_5823" title="NGC 5823">C88</a></td> <td><a href="/wiki/NGC_6087" title="NGC 6087">C89</a></td> <td><a href="/wiki/NGC_2867" title="NGC 2867">C90</a> </td></tr> <tr> <td><a href="/wiki/NGC_3532" title="NGC 3532">C91</a></td> <td><a href="/wiki/Nebulosa_della_Carena" title="Nebulosa della Carena">C92</a></td> <td><a href="/wiki/NGC_6752" title="NGC 6752">C93</a></td> <td><a href="/wiki/Scrigno_di_Gioie" title="Scrigno di Gioie">C94</a></td> <td><a href="/wiki/NGC_6025" title="NGC 6025">C95</a></td> <td><a href="/wiki/NGC_2516" title="NGC 2516">C96</a></td> <td><a href="/wiki/NGC_3766" title="NGC 3766">C97</a></td> <td><a href="/wiki/NGC_4609" title="NGC 4609">C98</a></td> <td><a href="/wiki/Nebulosa_Sacco_di_Carbone" title="Nebulosa Sacco di Carbone">C99</a></td> <td><a href="/wiki/IC_2944" title="IC 2944">C100</a> </td></tr> <tr> <td><a href="/wiki/NGC_6744" title="NGC 6744">C101</a></td> <td><a href="/wiki/Pleiadi_del_Sud" title="Pleiadi del Sud">C102</a></td> <td><a href="/wiki/Nebulosa_Tarantola" title="Nebulosa Tarantola">C103</a></td> <td><a href="/wiki/NGC_362" title="NGC 362">C104</a></td> <td><a href="/wiki/NGC_4833" title="NGC 4833">C105</a></td> <td><a href="/wiki/47_Tucanae" title="47 Tucanae">C106</a></td> <td><a href="/wiki/NGC_6101" title="NGC 6101">C107</a></td> <td><a href="/wiki/NGC_4372" title="NGC 4372">C108</a></td> <td><a href="/wiki/NGC_3195" title="NGC 3195">C109</a></td> <td> </td></tr></tbody></table></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r141815314"><table class="navbox mw-collapsible mw-collapsed noprint metadata" id="navbox-Nebulose_più_luminose"><tbody><tr><th colspan="3"><div class="navbox_navbar"><div class="noprint plainlinks" style="background-color:transparent; padding:0; font-size:xx-small; color:var(--color-base, #000000); white-space:nowrap;"><a href="/wiki/Template:Nebulose_pi%C3%B9_luminose" title="Template:Nebulose più luminose"><span title="Vai alla pagina del template">V</span></a> · <a href="/w/index.php?title=Discussioni_template:Nebulose_pi%C3%B9_luminose&action=edit&redlink=1" class="new" title="Discussioni template:Nebulose più luminose (la pagina non esiste)"><span title="Discuti del template">D</span></a> · <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Template:Nebulose_pi%C3%B9_luminose&action=edit"><span title="Modifica il template. Usa l'anteprima prima di salvare">M</span></a></div></div><span class="navbox_title">Le <a href="/wiki/Nebulosa" title="Nebulosa">nebulose</a> più brillanti del cielo</span></th></tr><tr><th colspan="1" class="navbox_group"><a href="/wiki/Regione_H_II" title="Regione H II">Regioni H II</a></th><td colspan="1" class="navbox_list navbox_odd"><a href="/wiki/Nebulosa_della_Carena" title="Nebulosa della Carena">Nebulosa della Carena</a><b> ·</b> <a href="/wiki/Nebulosa_di_Orione" title="Nebulosa di Orione">Nebulosa di Orione</a><b> ·</b> <a href="/wiki/Nebulosa_Laguna" title="Nebulosa Laguna">Nebulosa Laguna</a><b> ·</b> <a href="/wiki/Nebulosa_Rosetta" title="Nebulosa Rosetta">Nebulosa Rosetta</a><b> ·</b> <a href="/wiki/Nebulosa_Omega" title="Nebulosa Omega">Nebulosa Omega</a><b> ·</b> <a href="/wiki/Nebulosa_Trifida" title="Nebulosa Trifida">Nebulosa Trifida</a><b> ·</b> <a href="/wiki/Nebulosa_Aquila" title="Nebulosa Aquila">Nebulosa Aquila</a><b> ·</b> <a href="/wiki/Nebulosa_Tarantola" title="Nebulosa Tarantola">Nebulosa Tarantola</a><b> ·</b> <a href="/wiki/Nebulosa_Nord_America" title="Nebulosa Nord America">Nebulosa Nord America</a></td><td rowspan="2" class="navbox_image"><span typeof="mw:File"><a href="/wiki/File:Carina_Nebula_by_ESO.jpg" class="mw-file-description" title="La Nebulosa di Eta Carinae"><img alt="La Nebulosa di Eta Carinae" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Carina_Nebula_by_ESO.jpg/125px-Carina_Nebula_by_ESO.jpg" decoding="async" width="125" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/20/Carina_Nebula_by_ESO.jpg/188px-Carina_Nebula_by_ESO.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/20/Carina_Nebula_by_ESO.jpg/250px-Carina_Nebula_by_ESO.jpg 2x" data-file-width="8408" data-file-height="8337" /></a></span></td></tr><tr><th colspan="1" class="navbox_group"><a href="/wiki/Nebulosa_planetaria" title="Nebulosa planetaria">Nebulose planetarie</a></th><td colspan="1" class="navbox_list navbox_even"><a class="mw-selflink selflink">Nebulosa Elica</a><b> ·</b> <a href="/wiki/Nebulosa_Manubrio" title="Nebulosa Manubrio">Nebulosa Manubrio</a><b> ·</b> <a href="/wiki/NGC_246" title="NGC 246">Nebulosa Teschio</a><b> ·</b> <a href="/wiki/NGC_3132" title="NGC 3132">Nebulosa Anello del Sud</a><b> ·</b> <a href="/wiki/Nebulosa_Saturno" title="Nebulosa Saturno">Nebulosa Saturno</a><b> ·</b> <a href="/wiki/NGC_3918" title="NGC 3918">Planetaria Blu</a><b> ·</b> <a href="/wiki/NGC_3242" title="NGC 3242">Nebulosa Fantasma di Giove</a><b> ·</b> <a href="/wiki/Nebulosa_Occhio_di_Gatto" title="Nebulosa Occhio di Gatto">Nebulosa Occhio di Gatto</a><b> ·</b> <a href="/wiki/NGC_6572" title="NGC 6572">NGC 6572</a><b> ·</b> <a href="/wiki/NGC_7662" title="NGC 7662">Nebulosa Palla di Neve</a><b> ·</b> <a href="/wiki/NGC_6210" title="NGC 6210">NGC 6210</a><b> ·</b> <a href="/wiki/Nebulosa_Anello" title="Nebulosa Anello">Nebulosa Anello</a></td></tr></tbody></table> <div class="noprint" style="width:100%; 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