Transcription: This is a shot of the activation of the SSBUV, or the Shuttle Solar Backscatter Ultraviolet Experiment. It's a major secondary payload that we carried in the payload bay. Here it is, it flies in a gas can to get away special. And the SSBUV is going to be used to calibrate the NASA Nimbus satellites and the NOAA Tyros satellites which are presently orbiting the Earth, measuring the ozone layer.
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