Almost 70 well-known radio source catalogues and tables with about 1.3 Mrecords are now available via ftp from CATS, as well as their documentation files. CATS runs under LINUX and can process requests on the basis of various net protocols and via email. Chernenkov at SAO primarily to support RATAN-600 radio observations. All 5C and Penticton "P"-surveys and many of the published WSRT survey lists are now available. Almost 400 different source lists with ~2,000,000 entries have been archived (and partly prepared) by us. The independent efforts in east and west have recently been joined. at SAO (Russia) started building software tools to search and cross-identify objects between the major radio catalogues, maintained as the "CATalog supporting System" (CATS) at the Special Astrophysical Observatory (SAO, Russia). When EOLS lost maintenance support in 1994 a group. Some 67 catalogues with ~520,000 entries were searchable via the "Einstein On-line Service" (EOLS). Large efforts were spent by the first author in collecting and restoring electronic versions of new and old source catalogues. We review the history and present status of radio-source catalogue archiving and on-line retrieval of radio source data. Remotely and provides an extensible and customizable open-source Offers intuitive ways to browse large amounts of heterogeneous data As part of the Helioviewer Project, JHelioviewer Users can view, manipulate, pan, zoom, and overlay JPEG 2000Ĭompressed data quickly, without severe network bandwidth penalties.īesides viewing data, the browser provides third-party metadata andĮvent catalog integration to quickly locate data of interest, as well asĪn interface to the Virtual Solar Observatory to download This solution enables users toĪccess remote images at different resolution levels as a single data So by deploying an efficient image encoding, storage, and dissemination Users browse large data volumes both as still images and movies. To address these challenges, we haveĭeveloped JHelioviewer, an open-source visualization software that lets With such staggering data volume, the data is bound to beĪccessible only from a few repositories and users will have to deal withĭata sets effectively immobile and practically difficult to download.įrom a scientist's perspective this poses three challenges: accessing,īrowsing and finding interesting data while avoiding the proverbial Resolution, but a barrier for scientists to access, browse and analyze Observatory is both a blessing and a barrier: a blessing for makingĪvailable data with significantly higher spatial and temporal The unprecedented torrent of data returned by the Solar Dynamics
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