Knowra VizieR VizieR VizieR is an online service from the Strasbourg astronomical Data Centre that provides access to published astronomical catalogues and tables. It supports searching, browsing, and retrieving tabular data.
SIMBAD : SIMBAD is a database of astronomical objects and their bibliographic references, maintained by the Strasbourg astronomical Data Centre. SIMBAD complements VizieR by identifying objects and linking them to literature beyond individual catalogue tables.
Astronomical catalogue : An astronomical catalogue is a structured collection of measurements or classifications for celestial objects. VizieR organizes its holdings as catalogues and their associated tables.
Strasbourg astronomical Data Centre : The Strasbourg astronomical Data Centre is a French institution that develops and operates services for astronomical data. It develops and maintains VizieR as part of its astronomical data services.
Astronomical metadata : Astronomical metadata describes the origin, contents, units, and structure of astronomical data. VizieR uses catalogue descriptions and column metadata to make tables interpretable.
Aladin Sky Atlas : Aladin Sky Atlas is a software platform for exploring astronomical images, surveys, and catalogues across the sky. Aladin can overlay VizieR catalogue records on images and survey maps.
FITS : FITS is a digital file format designed to store, transmit, and process scientific data, especially astronomical images and tables. Many VizieR catalogue tables can be downloaded in FITS format.
Centre de Données astronomiques de Strasbourg : The Centre de Données astronomiques de Strasbourg is the French name of the Strasbourg astronomical Data Centre. This is the institution's original-language name, not a separate catalogue service.
Cone search : A cone search retrieves astronomical records whose sky positions fall within a specified radius of a target coordinate. VizieR uses positional cone searches to find catalogue entries near a sky location.
Astroquery : Astroquery is a Python package that provides programmatic access to online astronomical databases and archives. Its VizieR module retrieves catalogue data for reproducible analysis scripts.
Tab-separated values : Tab-separated values is a plain-text format that separates table fields with tab characters. VizieR offers tabular downloads that can be opened or processed as delimited text.
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