Image Metadata

Image metadata takes the form of a table containing enough information for Oasis to be able to draw outlines of the images. This can be either the equivalent of the FITS World Coordinate System (WCS) keywords or the four corners of each image (as equatorial J2000 decimal degree columns ra1, dec1, ... ra4, dec4). Several IRSA services produce such information.

This metadata table usually also contains a direct URL link to download each image file itself.