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<ri:Resource created="2014-11-25T15:40:00Z" status="active" updated="2026-03-04T11:08:16Z" version="1.2" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/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/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>Haslam 408Mhz reprocessed survey collection</title><shortName>Haslam408 v2</shortName><identifier>ivo://CDS/P/Haslam408/v2</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Fernique P.</name></creator><date role="Created">2014-11-25T15:40:00Z</date><date role="Updated">2019-05-05T06:35:00Z</date><contact><name>CDS Helpdesk</name><email>cds-question@unistra.fr</email></contact></curation><content><subject>Sky survey</subject><subject>Radio astronomy</subject><description>Remazeilles et al. 2014 have re-evaluated and re-processed the rawest Haslam 408 MHz data, available from the Max Planck Institute for Radioastronomy Survey Sampler website, to produce an improved source-subtracted and destriped 408 MHz all-sky map. Large-scale striations associated with correlated low-frequency noise in the scan direction are reduced using a Fourier-based filtering technique. The most important improvement results from the removal of extra-galactic sources. An iterative combination of two techniques - two-dimensional Gaussian fitting and minimum curvature spline surface inpainting - are used to remove the brightest sources (with flux density larger than 2 Jy).Desources destrier map.Original acknowledgement for data: see Remazeilles et al. (2014)</description><source format="bibcode">2015MNRAS.451.4311R</source><referenceURL>https://alasky.cds.unistra.fr/Haslam408_2014</referenceURL><type>Survey</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsDerivedFrom</relationshipType><relatedResource>LAMBDA/NASA</relatedResource></relationship></content><rights rightsURI="https://cds.unistra.fr/aladin-org/licences_aladin.html">This HiPS is distributed under ODbL license by Unistra/CNRS</rights><capability standardID="ivo://ivoa.net/std/hips#hips-1.0"><interface role="std" xsi:type="vs:ParamHTTP"><accessURL use="base">https://alasky.cds.unistra.fr/Haslam408_2014</accessURL><mirrorURL>https://alaskybis.cds.unistra.fr/Haslam408_2014</mirrorURL></interface></capability><coverage><temporal>39065 44117</temporal><spectral>2.6918409984375e-25 2.715032243962499e-25</spectral><footprint ivo-id="ivo://mocivod">https://alasky.cds.unistra.fr/Haslam408_2014/Moc.fits</footprint><waveband>Radio</waveband></coverage></ri:Resource>