Article Dans Une Revue Planetary and Space Science Année : 2017

Distance determination method of dust particles using Rosetta OSIRIS NAC and WAC data

1 OFFIS - Carl Von Ossietzky Universität Oldenburg = Carl von Ossietzky University of Oldenburg
2 ESTEC - European Space Research and Technology Centre
3 TUM - Technische Universität Munchen = Technical University Munich = Université Technique de Munich
4 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
5 Dipartimento di Fisica e Astronomia "Galileo Galilei"
6 LAM - Laboratoire d'Astrophysique de Marseille
7 CAB - Centro de Astrobiologia [Madrid]
8 ISSI - International Space Science Institute [Bern]
9 Department of Physics and Astronomy [Uppsala]
10 CBK - Space Research Centre of Polish Academy of Sciences
11 Akademie der Wissenschaften zu Göttingen
12 Department of Astronomy [College Park]
13 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
14 PLANETO - LATMOS
15 OAPD - INAF - Osservatorio Astronomico di Padova
16 IFN - CNR Institute for Photonics and Nanotechnologies
17 Department of Industrial Engineering [University of Padua]
18 OAT - INAF - Osservatorio Astronomico di Trieste
19 IAA-CSIC - Instituto de Astrofísica de Andalucía = Institute of Astrophysics of Andalusia
20 DLR Institute of Planetary Research
21 SSI - Space Science Institute [Macau]
22 IANCU - Institute of Astronomy [Taiwan]
23 IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
24 DLR Institut für Planetenforschung
25 Operations Department (ESAC)
26 DEI - Department of Information Engineering [Padova]
27 Physikalisches Institut [Bern]
Jean-Loup Bertaux
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Nicolas Thomas

Résumé

The ESA Rosetta spacecraft has been tracking its target, the Jupiter-family comet 67 P/Churyumov-Gerasimenko, in close vicinity for over two years. It hosts the OSIRIS instruments: the Optical, Spectroscopic, and Infrared Remote Imaging System composed of two cameras, see e.g. Keller et al. (2007). In some imaging sequences dedicated to observe dust particles in the comet's coma, the two cameras took images at the same time. The aim of this work is to use these simultaneous double camera observations to calculate the dust particles’ distance to the spacecraft. As the two cameras are mounted on the spacecraft with an offset of 70 cm, the distance of particles observed by both cameras can be determined by a shift of the particles’ apparent trails on the images. This paper presents first results of the ongoing work, introducing the distance determination method for the OSIRIS instrument and the analysis of an example particle. We note that this method works for particles in the range of about 500 m – 6000 m from the spacecraft.

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insu-01515014 , version 1 (09-05-2018)

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Esther Drolshagen, Theresa Ott, Detlef Koschny, Carsten Güttler, Cécilia Tubiana, et al.. Distance determination method of dust particles using Rosetta OSIRIS NAC and WAC data. Planetary and Space Science, 2017, 143, pp.256-264. ⟨10.1016/j.pss.2017.04.018⟩. ⟨insu-01515014⟩
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