Back-up film magazine assembly for the S-054 X-ray spectrograph experiment intended for use on a planned second Apollo Telescope Mount (ATM). The ATM was the major scientific instrument aboard Skylab, which was put into Earth orbit in May 1973 and operated for 8 months. ATM included eight major scientific instruments, as well as a number of smaller experiments, and was designed to be operated by three sets of visiting astronauts. The magazine was transferred from NASA's Marshall Space Flight Center in 1986.
Transferred from the National Aeronautics and Space Administration