Space Imaging (Denver), which provides Earth imagery and related services to commercial and government markets, is offering online purchasing of IKONOS satellite imagery through its Carterra Online Internet portal. The IKONOS Geo product archive has more than 900,000 images taken in the past three years. IKONOS Geo imagery is georeferenced and is available in black-and-white, color or multispectral. It has a horizontal accuracy of up to 15 meters not including effects of terrain.