The Space Telescope Imaging Spectrograph (STIS) resides in an axial bay behind the Hubble main mirror. STIS is nearly seven feet by three feet by three feet and weighs over 800 pounds. The spectrograph breaks incoming light into its various component colors to enable scientists to study the composition and physical properties of the universe.

This picture shows STIS in a caddy in a clean room at Ball Aerospace in Boulder, Colo., where it was manufactured.
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