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Deep Impact Observations by OSIRIS Onboard the Rosetta Spacecraft

Keller, Horst Uwe; Hviid, Stubbe F.; Lamy, Philippe +9 more

The OSIRIS cameras (optical, spectroscopic, and infrared remote imaging system) onboard the European Space Agency's Rosetta spacecraft observed comet 9P/Tempel 1 for 17 days continuously around the time of NASA's Deep Impact mission. The cyanide-to-water production ratio was slightly enhanced in the impact cloud, compared with that of normal comet…