Extent of the content of the resource over space, time, and frequency. Note that this definition is a temporary stand-in specification to be used until the STC metadata can be integrated in. Resolution has been folded into coverage as this expected to be the case for the final STC-based version. the spatial coverage of a resource Multiple occurances imply a coverage that is a union of the regions given (i.e. a logical "or", according to RM). a coverage area of the sky a coverage area covering the entire sky a coordinate system frame The International Celestial Reference System Equatorial coordinates in the FK5 system (J2000) Equatorial coordinates in the FK4 system (J1950) ecliptic coordinates (J2000) Galactic Coordinates (J2000) Super-Galactic Coordinates (J2000) a coverage area of the sky characterized by a range of longitude and latitude. The range in longitude The minimum longitude The maximum longitude The range in latitude The minimum latitude The maximum latitude a coverage area of the sky characterized by a central position and angular radius The spatial (angular) resolution that is typical of the observations of interest, in decimal degrees. The intrinsic size scale, given in arcseconds, associated with data items contained in a resource. Both data archives and catalogs have an intrinsic scale size. For example, a source catalog created from an instrument with one degree angular resolution would have a RegionOfRegard of 0.5 degree, meaning that if one is searching for information pertinent to a given position, objects in this catalog within 0.5 degree of the position of interest would need to be included. For an image archive the RegionOfRegard corresponds to the image field of view. the temporal coverage of a resource The earliest temporal coverage of the resource. If not provided, the start time is not known. The latest temporal coverage of the resource. If not provided, the end time is not known (e.g. because information continues to be added to the resource). The temporal resolution that is typical of the observations of interest, in seconds. the spectral coverage of a resource a named spectral region of the electro-magnetic spectrum. wavelength >= 10 mm; frequency <= 30 GHz. 0.1 mm <= wavelength <= 10 mm; 3000 GHz >= frequency >= 30 GHz. 1 micron <= wavelength <= 100 micons 0.3 microns <= wavelength <= 1 micon; 300 nm <= wavelength <= 1000 nm; 3000 Angstroms <= wavelength <= 10000 Angstroms 0.1 microns <= wavelength <= 0.3 micon; 1000 nm <= wavelength <= 3000 nm; 1000 Angstroms <= wavelength <= 30000 Angstroms 100 Angstroms <= wavelength <= 1000 Angstroms; 12 eV <= Energy <= 120 eV 0.1 Angstroms <= wavelength <= 100 Angstroms; 0.12 keV <= energy <= 120 keV energy >= 120 keV a range of the electro-magnetic spectrum specified by a lower and upper wavelength limit. The minimum wavelength The maximum wavelength The spectral resolution that is typical of the observations of interest, given as a ratio of the wavelength width (delta-lambda) to the observing wavelength (lambda).