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<ri:Resource created="2003-11-23T21:00:51Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>The 3C and 3CR Catalogues</title><shortName>VIII/1A</shortName><identifier>ivo://CDS.VizieR/VIII/1A</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Edge D.O.</name></creator><creator><name>Shakeshaft J.R.</name></creator><creator><name>McAdam W.B.</name></creator><creator><name>Baldwin J.E.</name></creator><creator><name>Archer S.</name></creator><date role="Updated">2012-09-24T08:33:31Z</date><date role="Created">2003-11-23T21:00:51Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>radio-sources</subject><subject>surveys</subject><description>The 3C Catalog is the result of observations with the Cambridge four-element interferometer at a frequency of 159MHz, and contains 471 sources between declinations -22 and +71degrees, with a flux density larger than 8Jy. 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The original numbering system has been preserved.</description><source format="bibcode">1959MmRAS..68...37E</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/VIII/1A</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/PASP/97/932">J/PASP/97/932 : 3CR Source Identifications (Spinrad 1985)</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=VIII/1A</accessURL><mirrorURL 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