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| ====== Home ====== | ====== Home ====== | ||
| - | Welcome to the "**Centre d'Analyse de Données Etendues**" (CADE) or "//Analysis Center for Extended Data//". CADE provides maps of ancillary astronomical data to the users of the astronomical community. The emphasis of CADE is on the extended sky emission. The database is provided in the [[http://healpix.jpl.nasa.gov|HEALPix]] sky pixelization scheme. | + | Welcome to the "**Centre d'Analyse de Données Etendues**" (CADE) or "//Analysis Center for Extended Data//". CADE provides maps of ancillary astronomical data to users in the astronomical community. The emphasis of CADE is on extended sky emission. The database is provided in the [[http://healpix.jpl.nasa.gov|HEALPix]] sky pixelization scheme. |
| - | An increasing number of large survey projects uses an unique hierarchical pixelization of the celestial sphere called [[http://healpix.jpl.nasa.gov|HEALPix]]. | + | An increasing number of large survey projects use a unique hierarchical pixelization of the celestial sphere called [[http://healpix.jpl.nasa.gov|HEALPix]]. |
| - | A strategy of ancillary data ingestion in the HEALPix format is used, which allows to generate partial or all-sky HEALPix files from the more traditional local representation traditionally used for astronomical data. The ingestion tool is based on the drizzling library, and uses a strategy where the surface of pixel intersection is computed as presented in Appendix A in Paradis et al., 2012, A&A, 543, 103. The method allows fast ingestion and guarantees the photometric accuracy of the transformation with minimal data loss during the transformation from local FITS maps in the WCS (World Coordinate System) system to HEALPix. | + | CADE pursues a strategy of ancillary data ingestion in the HEALPix format, generating partial or all-sky HEALPix files from astronomical data that is represented using the more traditional local World Coordinate System (WCS) FITS format. The ingestion tool is based on the drizzling library, and uses a strategy where the surface of pixel intersection is computed as presented in Appendix A of Paradis et al., 2012, A&A, 543, 103. This method allows fast ingestion and guarantees the photometric accuracy of the transformation with minimal data loss during the transformation from a local WCS FITS map to HEALPix. |
| - | **CADE ensures the data production in the HEALPix maps, data archiving and diffusion to the community.** | + | **CADE provides astronomical data production in the HEALPix format, data archiving and diffusion to the community.** |
| ==== The service delivers ==== | ==== The service delivers ==== | ||
| - | * A set of extended data maps in the HEALPix format for various astronomical large-scale surveys. | + | * Extended, multi-wavelength data from astronomical large-scale surveys in the HEALPix format. |
| + | * Uncertainty and/or hit count maps, when available | ||
| * Meta-data that facilitates automated data analysis. | * Meta-data that facilitates automated data analysis. | ||
| - | * Non-publicly available surveys, used by some projects (including Planck, Herschel). | + | * Non-public survey data sets, for internal project use (including Planck, Herschel). Please contact us if you would like CADE to host password-protected data for your project. |
| - | * VO compatible data, accessible through the Aladin software (http://aladin.u-strasbg.fr/). | + | * VO-compatible data, accessible through the Aladin software (http://aladin.u-strasbg.fr/). |
| - | * The drizzling library allowing for data projection from HEALPix to local WCS, available here : http://cade.irap.omp.eu/dokuwiki/doku.php?id=software \\ | + | * The drizzling software library (in Python), which reprojects data from HEALPix to local WCS and is available here : http://cade.irap.omp.eu/dokuwiki/doku.php?id=software \\ |
| + | * A Web interface of the Drizzlib (DrizzWeb) http://drizzweb.irap.omp.eu/ | ||
| + | * ** NEW: The first SED Extractor tool (in Python), which extracts a Spectral Energy Distribution from HEALPix, WCS or mixture of HEALPix-WCS FITS files | ||
| + | ** | ||
| + | /*==== Future developments ==== | ||
| - | ==== Future developments ==== | + | * HEALPix files will be provided at different resolutions |
| - | + | ||
| - | * Uncertainty and/or hit count maps will be associated to the data | + | |
| * Additional meta-data will be included in the header of the files | * Additional meta-data will be included in the header of the files | ||
| - | * Tool: SED extractor, compatible with the [[http://dustemwrap.irap.omp.eu|DustEM software]] | + | * Tool: SED extractor, compatible with the [[http://dustemwrap.irap.omp.eu|DustEM software]]*/ |
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| If you have any questions or comments, please contact : | If you have any questions or comments, please contact : | ||
| * Déborah Paradis : [[deborah.paradis@irap.omp.eu|deborah.paradis@irap.omp.eu]] | * Déborah Paradis : [[deborah.paradis@irap.omp.eu|deborah.paradis@irap.omp.eu]] | ||
| - | * Jean-Philippe Bernard: [[jean-philippe.bernard@irap.omp.eu|jean-philippe.bernard@irap.omp.eu]] | + | * Jean-Michel Glorian: [[jean-michel.glorian@irap.omp.eu|jean-michel.glorian@irap.omp.eu]] |
| + | |||
| - | //We thank Pierre Fernique, Laurent Cambrésy, Caroline Bot, Thomas Boch, Jean-Michel Glorian and Antoine Goutenoir for their help.// | + | //We thank Pierre Fernique, Laurent Cambrésy, Caroline Bot, Thomas Boch, Antoine Goutenoir, Gabriel Foënard and Anaïs Amato for their help.// |