Looking Back: Dr. George Carruthers and Apollo 16 Far Ultraviolet Camera/Spectrograph Dr. George Carruthers, right, and William Conway, a project manager at the Naval Research Institute, examine the gold-plated ultraviolet camera/spectrograph, the first moon-based observatory that Carruthers developed for the Apollo 16 mission. Apollo 16 astronauts placed the observatory on the moon in April 1972. via NASA http://ift.tt/2kwxJTs