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Photomultiplier for optically probing Comet Halley

Llebaria, A.; Lamy, P.; Levasseur-Regourd, A. C. +7 more

A low mass eight-color channel photopolarimeter was developed for the Giotto spacecraft. Utilizing the spin of the spacecraft, a multichannel plate photomultiplier, and a unique optical design, the instrument required no moving parts to measure color and linear polarization. The photopolarimeter collected data as the spacecraft passed through the …