Inner core of Simplesat is first assembled   Components are added to complete assembly   Simplesat telescope entrance aperture   Finding the center-of- gravity of Simplesat   Rooftop testing of GPS receiver   Simplesat at vibration test   Simplesat mounted onto HitchHiker ejection system HitchHiker canister lowered over Simplesat   Canister carefully guided over Simplesat   Cleaning the optics prior to installation in the Orbiter   Simplesat (in its canister) is installed in cargo bay of Discovery with Earth overhead Simplesat canister in space as seen from a cargo bay camera