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On-ground characterization of Rosetta/VIRTIS-M. I. Spectral and geometrical calibrations

Piccioni, G.; Capaccioni, F.; Coradini, A. +5 more

The complete characterization of complex imaging spectrometers, such as VIRTIS-M (visual infrared thermal imaging spectrometer) aboard the Rosetta mission, requires a detailed and prolonged activity starting with the instrument integration and continuing during the entire operational life of the experiment. In this article we report the main exper…

On-ground characterization of Rosetta/VIRTIS-M. II. Spatial and radiometric calibrations

Piccioni, G.; Capaccioni, F.; Coradini, A. +5 more

After having considered the spectral and geometrical performances of the Rosetta/VIRTIS-M experiment, we complete here the analysis by evaluating quantitatively the flat-field and radiometric responses. The purpose of this work is to retrieve the flat-field matrix necessary to homogenize the focal plane response. Moreover, the most important resul…

Development of a low energy ion source for ROSINA ion mode calibration

Altwegg, Kathrin; Balsiger, Hans; Rubin, Martin +1 more

The European Rosetta mission on its way to comet 67P/Churyumov-Gerasimenko will remain for more than a year in the close vicinity (1 km) of the comet. The two ROSINA mass spectrometers on board Rosetta are designed to analyze the neutral and ionized volatile components of the cometary coma. However, the relative velocity between the comet and the …