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Instrument: DOAS : Differential Optical Absorption Spectrometers
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The Differential Optical Absorption Spectrometer (DOAS)
instrument consists of grating spectrometers covering the
visible and near ultraviolet spectral region. Zenith-scattered
sunlight is collected by simple one-lens telescopes and fed via
optical fiber bundles into the spectrometers, where atmospheric
absorption spectra are obtained. The instrument runs

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[Summary provided by the Swedish Institute of Space Physics]