ReportsAstronomy and Solar Physics

Astronomy and Solar Physics

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Science  13 Jul 1984:
Vol. 225, Issue 4658, pp. 182-184
DOI: 10.1126/science.225.4658.182


The solar spectrum experiment on Spacelab 1 measured 98 percent of the sun's total energy output. It improved the absolute accuracy of solar irradiance data, especially in the ultraviolet and infrared regions. In order to detect any variation in the spectrum on future shuttle flights, the data were obtained in a radiation scale that can be preserved with high precision over many years. The instrument performance and preliminary data reduction are described.