Click thumbnails on the right to view images. Gallery 1 Gallery 2 Gallery These images were rendered by Phillum, a physically based ray tracer developed at NASA Goddard. Phillum was created to generate realistic images of spacecraft to test pose estimation software that was part of the Relative Navigation Sensor (RNS) Experiment which flew onboard the Space Shuttle Atlantis, STS-125, in May 2009. Servicing Mission 4 Computer generated image of the Space Shuttle Atlantis docking with the Hubble Space Telescope during Servicing Mission 4. Hubble Space Telescope Simulated view of the Hubble Space Telescope from the RNS experiment's long range camera. Hubble Aft Bulkhead Simulated view of Hubble's aft bulkhead from the RNS experiment's mid range camera. Soft Capture Mechanism Simulated view of the Soft Capture Mechanism (SCM) that was attached to the Hubble Space Telescope during Servicing Mission 4. View from the RNS experiment's short range camera.