A view of the SRTM's 200 ft. boom deployed from OV-105 during STS-99

S99-E-5035 (12 February 2000)--- The 200 ft.-long mast supporting the Shuttle Radar Topography Mission juts into space from the Space Shuttle Endeavour (out of frame at left). The giant structure was deployed earlier today and the antennae on it quickly went to work mapping parts of Earth. This photograph was taken with an electronic still camera (ESC) by a crew member inside Endeavour's cabin.