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<ri:Resource created="1997-12-09T23:29:08Z" 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>6C Survey of radio sources - II.</title><shortName>VIII/21</shortName><identifier>ivo://CDS.VizieR/VIII/21</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Hales S.E.G.</name></creator><creator><name>Baldwin J.E.</name></creator><creator><name>Warner P.J.</name></creator><date role="Updated">2015-04-24T17:49:31Z</date><date role="Created">1997-12-09T23:29:08Z</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 6th Cambridge survey of radio sources covers most of the sky north of +30{deg} with an angular resolution of 4.2x4.2cosec{delta}arcmin^2^ and reaches a limiting flux density of 190mJy at 151MHz in the present zone. In this paper the methods used to produce the survey maps from a non-tracking telescope operating at declinations other than the north celestial pole are described: this forms the basis for all future papers in the series. Maps of a high galactic latitude region are presented 30{deg}&lt;{delta}&lt;51{deg}, 08h30m&lt;{alpha}&lt;17h30m, together with a list of 8278 sources in the 2030deg^2^ covered. A source count over the range 200mJy&lt;S(151)&lt;100Jy is derived.</description><source format="bibcode">1988MNRAS.234..919H</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/VIII/21</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/VIII/18">VIII/18 : I. (Dec&gt;80)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/VIII/22">VIII/22 : III. (48&lt;Dec&lt;68 , 05h25&lt;RA&lt;18h17)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/VIII/23">VIII/23 : IV. 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