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An electronic still camera (ESC) aimed through Columbia's aft flight deck windows recorded this scene of a portion of the Chandra X-Ray Observatory during deployment operations. The primary duty of the STS-93 crew was to deploy the world's most powerful X-Ray telescope. It was also among the first actions of the crew, occurring just a few hours following Columbia's arrival in Earth orbit. This is one of a series of still photos recorded by the crew during the deployment of the 50,162 pound observatory.