Misc Parts, Canister, ATM, Backup, Sun Section


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

This is the sunward canister from a backup unit of the Apollo Telescope Mount. It includes the 8-foot cap, or "sun shield" that houses the light entry ports for the ATM instruments, the handholds, and the locking devices. Built by NASA's Marshall Space Flight Center, the telescope mount was attached to Skylab's multiple docking adapter. It held eight major scientific instruments and several smaller experiments that were operated from within Skylab. Astronauts used the instruments to study the Sun's surface and atmosphere in visible and ultraviolet light, as well as by x-ray emission. Most of the instruments recorded data on photographic film, which the astronauts replacedas needed.

NASA transferred the telescope mount to NASM in 1982. It was displayed in the Stars gallery from then until the exhibit closed in 1997.

Collection Item Long Description:

Inventory Number


Credit Line

Transferred from the National Aeronautics and Space Administration


  • [Mixed metals, vacuum coated mylar films, connecting hardware - from A19830234006.]
  • Klapton
  • Cellophane Tape
  • Aluminum Tape


  • 3-D (Largest Piece): 55.6 × 55.6 × 4.4cm (1 ft. 9 7/8 in. × 1 ft. 9 7/8 in. × 1 3/4 in.)
  • 3-D (ATM Spar Lifting Fixtures - Heavy): 17.1 × 14 × 24.1cm (6 3/4 × 5 1/2 × 9 1/2 in.)

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


SPACECRAFT-Manned-Parts & Structural Components