Astro 7 zodiacal light uv polychromator and its absolute radiometric calibration.
The uv polychromator, flown in 1975 on the Astro 7 zodiacal light rocket experiment, and its absolute radiometric calibration are described. The instrument is essentially a broadband double polychromator with high stray light suppression. The spectral ranges of +/-20-nm width are cenyered at 180 nm, 220 nm, and 260 nm, respectively. The absolute calibration is based on the synchrotron radiation of the Deutsches Elektronen Synchrotron, Hamburg with deuterium lamps as transfer standards.
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