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GIOTTO OPTICAL PROBE PHASE MEASUREMENTS V1.0

Published by National Aeronautics and Space Administration | National Aeronautics and Space Administration | Catalog Last Checked: June 09, 2026 at 10:25 PM | Dataset Last Updated: July 17, 2025
The OPE photopolarimeter was designed to measure the polarized components of the light in seven bandpasses or channels, ranging from the near ultraviolet to the near infrared. Three channels (so- called blue, green and red) were devoted to the observation of the scattering of solar light by cometary dust grains, in emission-free countinuum bands. Four other channels (so called OH, CN, CO+, C2) were devoted to the observation of light emitted by cometary gases.

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