HRS ivo://helio-vo.eu/org.astrogrid.registry.RegistryService MSSL Kevin Benson kmb@mssl.ucl.ac.uk registry Astrogrid Registry http://helio.mssl.ucl.ac.uk/helio_registry/registry_helio_ivo Registry http://helio.mssl.ucl.ac.uk/helio_registry/OAIHandlerv1_0 http://helio.mssl.ucl.ac.uk/helio_registry/services/RegistryHarvestv1_0 200 http://helio.mssl.ucl.ac.uk/helio_registry/services/RegistryQueryv1_0 200 full XQuery false helio_ivo.mssl.ucl.ac.uk helio-vo.eu