NASA's Chandra X-ray Observatory (n e AXAF), was launched in July 1999. The Chandra Multiwavelength Project (ChaMP) described here combines radio to X-ray observations of serendipitous Chandra sources, with an optical survey as its backbone, to provide a uniform multiwavelength database to the community. ... Here we describe the ChaMP, with emphasis on optical imaging followup, reaching V ~ 25. ... what fraction missed in soft X-ray and optical surveys due to obscuration? ... Science Goals | ...