Search Publications
Correction of instrument temperature dependence of detector responsivity for measurements of comet 67P acquired by Rosetta's Visible and InfraRed Thermal Imaging Spectrometer, Mapping channel (VIRTIS-M)
D'Aversa, E.; Kappel, D.; Erard, S. +8 more
The Mapping channel of the Visible and InfraRed Thermal Imaging Spectrometer (VIRTIS-M) aboard Rosetta acquired many hyperspectral images of comet 67P/Churyumov–Gerasimenko (hereafter 67P). The VIS channel detector responsivity was dependent on the VIS detector temperature (TVIS). This affects the absolute values of the measured spectra (for a TVI…
INFRA-ICE: An ultra-high vacuum experimental station for laboratory astrochemistry
Santoro, Gonzalo; Sobrado, Jesús. M.; Tajuelo-Castilla, Guillermo +7 more
Laboratory astrochemistry aims at simulating, in the laboratory, some of the chemical and physical processes that operate in different regions of the universe. Amongst the diverse astrochemical problems that can be addressed in the laboratory, the evolution of cosmic dust grains in different regions of the interstellar medium (ISM) and its role in…
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 …