Strasbourg astronomical Data Center

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astronomical Data Center </h1> <p aria-label="Page description">The Strasbourg astronomical Data Center (CDS) is a data center dedicated to the collection and worldwide distribution of astronomical data and related information. It is located at the Strasbourg Astronomical Observatory, France.</p> <div class="header-links"><a href="https://cds.unistra.fr/about/cds">Read more about the CDS</a></div> </header> <div class="search-container" data-pagefind-ignore> <div class="modal-background"></div> <div class="search-form"> <input type="text" placeholder="Search terms..." /> </div> <div class="search-result hidden"> <div class="message">Sorry! No page matches the terms <code class="terms"></code></div> <div class="filters"></div> <ul class="results"></ul> </div> </div> <div class=" main-wrapper" > <main class="home"> <div> <section class="news-row"> <section id="statistics" class="items block"> <header>Key numbers</header> <main> <ul> <li> <span class="value">20,087,775</span> <span>SIMBAD objects</span> <div class="info with-popup"> <div class="popup"> <img class="logo" src="https://cds.unistra.fr/img/cds/simbad.svg" alt="SIMBAD"><br/> SIMBAD is a database of identifications and bibliography of astronomical objects.<br/> Here is the total number of objects it contains.<br/> <small><a href="data-access/services/simbad/">More about SIMBAD</a></small> </div> </div> </li> <li> <span class="value">25,723</span> <span>VizieR catalogs</span> <div class="info with-popup"> <div class="popup"> <img class="logo" src="https://cds.unistra.fr/img/cds/vizier.svg" alt="VizieR"><br/> VizieR is a library of astronomical catalogues.<br/> Here is the total number of catalogues it contains.<br/> <small><a href="data-access/services/vizier/">More about VizieR</a></small> </div> </div> </li> <li> <span class="value">1,280</span> <span>HiPS</span> <div class="info with-popup"> <div class="popup"> <img class="logo" src="https://cds.unistra.fr/img/cds/aladin.svg" alt="Aladin"><br/> HiPS stands for Hierarchical Progressive Survey. It is a hierarchical scheme for the description, storage and access of sky survey data. It uses the HEALPix tessellation of the sky.<br/> The CDS uses HiPS to show available surveys in Aladin and AladinLite.<br/> <small><a href="data-access/services/aladin/">More about Aladin</a></small><br/> <small><a href="https://www.ivoa.net/documents/HiPS/">More about HiPS</a></small> </div> </div> </li> <li> <span class="value">37,291</span> <span>MOCs</span> <div class="info with-popup"> <div class="popup"> <img class="logo" src="https://cds.unistra.fr/img/misc/MOC.png" alt="MocServer"><br/> MOC stands for Multi-Order Coverage Map. It is a method aiming to specify arbitrary coverages for sky regions and/or time coverages and potentially other dimensions.<br/> At CDS, MOCs are mostly used in Aladin and AladinLite to visualize a given coverage but also to discover matching surveys or data sets.<br/> The CDS also provides a catalogue of MOCs. This service is called <em>MOC Server</em>.<br/> <small><a href="https://www.ivoa.net/documents/MOC/">More about MOC</a></small><br/> <small><a href="data-access/services/mocserver/">More about MOC Server</a></small> </div> </div> </li> <li> <span class="value">441,766</span> <span>biblio. references</span> <div class="info with-popup"> <div class="popup"> <img class="logo" src="https://cds.unistra.fr/img/cds/simbad.svg" alt="SIMBAD"><br/> SIMBAD is a catalogue of astronomical objects referenced in astronomical articles.<br/> Here is the number of all bibliographic references used to update SIMBAD.<br/> <small><a href="data-access/services/simbad/">More about SIMBAD</a></small> </div> </div> </li> <li> <span class="value">25,767</span> <span>acronyms</span> <div class="info with-popup"> <div class="popup"> <img class="logo" src="https://cds.unistra.fr/img/cds/dic.png" alt="Dic"><br/> Astronomical objects are designated by object identifiers (often called object names).<br/> An acronym is used to build and describe an object identifier.<br/> The CDS publishes a catalogue of acronyms called the Dictionary of Nomenclature. This dictionary is mostly used by SIMBAD, VizieR and Sesame but can also be used by anyone to get the description of the acronym used for a given object identifier.<br/> <small><a href="data-access/services/dico/">More about the Dictionary of Nomenclature</a></small> </div> </div> </li> </ul> </main> </section> <section id="showroom" class="carousel"> <aside class="previous-entry" title="Previous"></aside> <aside class="next-entry" title="Next"></aside> <main> <article class="with-image is-active"> <header>20 million objects in SIMBAD </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/blog/2024/11/25-simbad-20-million.png)" alt="Missing front image!"></div> </aside> <main>In November 2024, the number of distinct astronomical objects in SIMBAD passed the 20 million milestone. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/11/25-simbad-20-million/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>VPHAS DR4 H-alpha </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/blog/2024/04/23-vphas-dr4-halpha/23-vphas-dr4-halpha.jpg)" alt="Missing front image!"></div> </aside> <main>Explore this ESO survey with Aladin. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/04/23-vphas-dr4-halpha/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>New HiPS for planet Earth </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/blog/2024/04/10-earth-elevation-hillshading/10-earth-elevation-hillshading.png)" alt="Missing front image!"></div> </aside> <main>Explore the Earth elevation with this new planetary HiPS. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/04/10-earth-elevation-hillshading/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>A new access to SIMBAD TAP in astroquery </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/img/cds/simbad.svg)" alt="Missing front image!"></div> </aside> <main><p>The latest version of the python library <a href="https://astroquery.readthedocs.io/en/latest/"target="_blank" rel="noopener">astroquery</a> (v0.4.7) ships a new access to SIMBAD TAP.</p> <p>The detailed documentation is on <a href="https://astroquery.readthedocs.io/en/latest/simbad/simbad.html#query-tap"target="_blank" rel="noopener">astroquery's page</a>, but here is a quick preview of some of the new functionalities:</p>[...] </main> <footer> <a href="https://cds.unistra.fr/news/2024/04/05-access-simbad-tap-from-astroquery/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>HiPS tutorial </header> <aside class="image"> <div style="background-image: url(https://aladin.cds.unistra.fr/tutorials/OV-France-2024/tuto-preview.jpg)" alt="Missing front image!"></div> </aside> <main>Tutorial presented during the OV France semi-hackathon 2024, on HiPS creation, usage in various applications and libraries (Aladin Desktop, Aladin Lite, mocpy, ipyaladin), and cutout generation. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/03/20-ov-france-tutorial/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>Space Telescope Live </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/blog/2024/03/12-space-telescope-live/STScI-hubble-webb.jpg)" alt="Missing front image!"></div> </aside> <main>Explore what NASA鈥檚 Hubble and Webb space telescopes are observing. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/03/12-space-telescope-live/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>A new look for the CDS Website </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/blog/2024/02/20-a-new-look-for-the-cds-website/website-migration.webp)" alt="Missing front image!"></div> </aside> <main>The CDS website has a new look and some new contents. Here's a detailed description. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/02/20-a-new-look-for-the-cds-website/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>SimWatch </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/blog/2024/02/19-simwatch/simwatch_email.png)" alt="Missing front image!"></div> </aside> <main>Get notifications on latest references for your preferred objects. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/02/19-simwatch/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>CDS login </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/img/cds/cdsportal.svg)" alt="Missing front image!"></div> </aside> <main>Creating a personnal account at CDS gives you access to additional resources. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/02/12-cds-login/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>Astrobetter posts on CDS and Python </header> <aside class="image"> <div style="background-image: url(https://cds.unistra.fr/blog/2024/02/06-astrobetter-python/Python-logo.png)" alt="Missing front image!"></div> </aside> <main>Links to Katharina Lutz 2020 astrobetter posts. </main> <footer> <a href="https://cds.unistra.fr/blog/2024/02/06-astrobetter-python/" target="_blank">Read more</a> </footer> </article> <article class="with-image"> <header>Fornax Deep Survey HiPS datasets available </header> <aside class="image"> <div style="background-image: url(/news/2023/08/04-fornax-deep-survey-hips-datasets-available/FDS-snapshot.jpg)" alt="Missing front image!"></div> </aside> <main><p>The HiPS images collection has been enhanced with 5 new datasets corresponding to the Fornax Deep Survey (FDS) HiPS:</p> <ul> <li><a href="https://alasky.cds.unistra.fr/FDS/CDS_P_FDS_DR1_color/"target="_blank" rel="noopener">DR1 color composition</a></li> <li><a href="https://alasky.cds.unistra.fr/FDS/CDS_P_FDS_DR1_g/"target="_blank" rel="noopener">DR1 band g</a></li> <li><a href="https://alasky.cds.unistra.fr/FDS/CDS_P_FDS_DR1_r/"target="_blank" rel="noopener">DR1 band r</a></li> <li><a href="https://alasky.cds.unistra.fr/FDS/CDS_P_FDS_DR1_i/"target="_blank" rel="noopener">DR1 band i</a></li> <li><a href="https://alasky.cds.unistra.fr/FDS/CDS_P_FDS_DR1_u/"target="_blank" rel="noopener">DR1 band u</a></li> </ul> <p>These new HiPS are published in the HiPS network and can be accessed from any HiPS client.</p>[...] </main> <footer> <a href="https://cds.unistra.fr/news/2023/08/04-fornax-deep-survey-hips-datasets-available/" target="_blank">Read more</a> </footer> </article> </main> <footer> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom" checked="checked"> <label>20 million objects in SIMBAD</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>VPHAS DR4 H-alpha</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>New HiPS for planet Earth</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>A new access to SIMBAD TAP in astroquery</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>HiPS tutorial</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>Space Telescope Live</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>A new look for the CDS Website</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>SimWatch</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>CDS login</label> </span> <span class="goto-item"> <input type="radio" class="goto" name="currArticleShowroom"> <label>Astrobetter posts on CDS and Python</label> </span> </footer> </section> <section id="flashNews" class="links block"> <header>News</header> <main> <a href=https://cds.unistra.fr/news/catalogs-added/>Catalogs recently added in VizieR</a> <a href=https://cds.unistra.fr/news/2024/10/21-new-vizier-version/>New VizieR version</a> <a href=https://cds.unistra.fr/news/2024/10/08-specfind3-in-simbad/>SPECFIND 3.0 ingested into SIMBAD</a> <a href=https://cds.unistra.fr/news/2024/06/20-service-outage/>Service outage</a> <a href=https://cds.unistra.fr/news/2024/03/28-easter-egg-hunt/>Easter Egg Hunt</a> <a href="https://cds.unistra.fr/news/"><em>More news</em></a> </main> </section> </section> <section class="with-aside"> <aside class="center"> <img src="img/home/make_your_data_visible.webp" alt="VizieR: a lighthouse for data publication at CDS" /> </aside> <main><h1 id="publishing-data-at-cds">Publishing data at CDS <a href="#publishing-data-at-cds" class="quick-link" title="Quick link on this section."></a></h1><p>The CDS strongly relies on data published in various astronomical and astrophysical journals to update databases like SIMBAD and VizieR.</p> <p>Authors of these articles can help the CDS team to get and publish their data.</p> <p>See the <a href="https://cds.unistra.fr/data-publication">Data publication page</a> to get some best practices and tools to help you.</p> <h1 id="accessing-cds-data">Accessing CDS data <a href="#accessing-cds-data" class="quick-link" title="Quick link on this section."></a></h1><p>The CDS gives access to many astronomical data such as objects, catalogues, images and spectra.</p> <p>Several services are available to search for and to get these data. Here are the main services:</p> <div class="center"> <a class="logo" href="https://simbad.cds.unistra.fr/" title="SIMBAD - CDS' astronomical database" target="_blank"> <img class="logo" src="img/cds/simbad.svg" alt="SIMBAD"> </a> <a class="logo" href="https://vizier.cds.unistra.fr/" title="VizieR - CDS' library of astronomical catalogues" target="_blank"> <img class="logo" src="img/cds/vizier.svg" alt="VizieR"> </a> <a class="logo" href="https://aladin.cds.unistra.fr/" title="Aladin - CDS' interactive sky atlas" target="_blank"> <img class="logo" src="img/cds/aladin.svg" alt="Aladin"> </a> <a class="logo" href="http://cdsxmatch.u-strasbg.fr/" title="X-Match - CDS' crossmatch service" target="_blank"> <img class="logo" src="img/cds/xmatch.svg" alt="X-Match"> </a> <a class="logo" href="http://cdsportal.u-strasbg.fr/" title="CDS Portal" target="_blank"> <img class="logo" src="img/cds/cdsportal.svg" alt="CDS-Portal"> </a> </div> <h1 id="need-more-information">Need more information? <a href="#need-more-information" class="quick-link" title="Quick link on this section."></a></h1><p>You can find information about the CDS and its activities in the <a href="https://cds.unistra.fr/about/">About section</a>.</p> <p>Various help material is available in the <a href="https://cds.unistra.fr/help/">Help section</a> of this website.</p> <p>Specifically about how to access data, <a href="https://cds.unistra.fr/help/tutorials">Tutorials</a>, <a href="https://cds.unistra.fr/help/tutorials">services documentations</a> and <a href="https://cds.unistra.fr/data-access/tools">tools and API documentation</a> are available. You can also find more precise help on a specific service on its own website, or on a specific tool in its GitHub repository (if any).</p> <p>You might also find answers in the <a href="https://cds.unistra.fr/help/faq">Frequently Asked Questions page</a>.</p> <p>If you still need help, do not hesitate <a href="mailto:cds-question@unistra.fr" title="Send an email to the CDS team.">to send us an email</a>.</p> </main> </section> <section> <h1>CDS on the Web</h1> <main> <ul class="horizontal"> <li><a href="https://www.youtube.com/@CDSportal"><img class="logo big" src="https://cds.unistra.fr/img/home/youtube.png" alt="Youtube" /></a></li> <li><a href="https://www.facebook.com/CDSportal/"><img class="logo big" src="https://cds.unistra.fr/img/home/facebook.png" alt="Facebook" /></a></li> <li><a href="https://github.com/cds-astro"><img class="logo big" src="https://cds.unistra.fr/img/home/github.png" alt="GitHub" /></a></li> <li><a href="https://podv2.unistra.fr/centre-de-donnees-astronomiques-de-strasbourg/"><img class="logo big" src="https://cds.unistra.fr/img/home/podunistra.png" alt="POD Unistra" /></a></li> </ul> </main> </section> </div> </main> </div> <div class="void-wrapper for-footer" data-pagefind-ignore>  <footer class="cds-footer for-cds" data-pagefind-ignore> <div class="cds">  <a class="cds logo" href="https://cds.unistra.fr" title="CDS - Centre de Donn茅es astronomiques de Strasbourg" target="_blank"></a>  <div class="socials"> <a class="email" title="Send an email to the CDS team." href="mailto:cds-question@unistra.fr?Subject=CDS"></a> <a class="rss" title="RSS Feed of the CDS news" href="https://cds.unistra.fr/news/rss.php" target="_blank" rel="noopener noreferrer"></a> <a class="facebook" title="CDS' Facebook page." href="https://www.facebook.com/CDSportal/" target="_blank" rel="noopener noreferrer"></a> <a class="youtube" title="CDS' Youtube channel." href="https://www.youtube.com/@CDSportal" target="_blank" rel="noopener noreferrer"></a> <a class="github" title="CDS' GitHub page." href="https://github.com/cds-astro" target="_blank" rel="noopener noreferrer"></a> </div> </div> <div class="service"> <div class="content"> <a class="logo affiliation cnrs" href="https://www.cnrs.fr/en" title="CNRS - Centre National de la Recherche Scientifique" target="_blank"></a><a class="logo affiliation unistra" href="https://www.unistra.fr/" title="Unistra - Universit茅 de Strasbourg" target="_blank"></a><a class="logo affiliation obas" href="https://astro.unistra.fr" title="Observatoire astronomique de Strasbourg" target="_blank"></a> </div> </div> <div class="legal-links"> <a href="https://cds.unistra.fr/about/contact/">Contact</a> - <a href="https://cds.unistra.fr/legals/">Legals</a> </div> </footer> </div> <script type="text/javascript" src="https://cds.unistra.fr/js/cds-general.min.js"></script> </body> </html>

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