“We are looking for people to help us complete the Lunar Orbiter Image Recovery Project (LOIRP). We call this technoarchaeology – mining the past to support science in the future. Between 1966 and 1967, NASA sent five Lunar Orbiter missions to the Moon. Their mission was to photograph the lunar surface to help identify future Apollo mission landing sites. The spacecraft carried 70mm photographic film which was developed automatically in lunar orbit aboard the spacecraft. The developed film was then scanned with a light beam and this modulated a signal which was sent back to Earth.” More at RocketHub
Official website of the Lunar Orbiter Image Recovery Project (LOIRP)