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

Esther Drolshagen 1 Theresa Ott 1 Detlef Koschny 2, 3 Carsten Güttler 4 Cécilia Tubiana 4 Jessica Agarwal 4 H. Sierks 4 Cesare Barbieri 5 Philippe Lamy 6 R. Rodrigo 7, 8 H. Rickman 9, 10 Michael F. A'Hearn 11, 12, 4 M. Barucci 13 Jean-Loup Bertaux 14 Ivano Bertini 5 Gabriele Cremonese 15 V. Da Deppo 16 B. Davidsson 9 S. Debei 17 M. Cecco 18 J. Deller 4 C. Feller 13 Sonia Fornasier 13 M. Fulle 18 Adeline Gicquel 4 O. Groussin 6 J. Gutiérrez 19 M. Hofmann 4 S. F. Hviid 4, 20 W.-H. Ip 21, 22 Laurent Jorda 6 H.U. Keller 20, 23 J. Knollenberg 24 J.R. Kramm 4 Ekkehard Kührt 24 M. Küppers 25 Luisa M. Lara 19 M. Lazzarin 5 José J. Lopez Moreno 19 F. Marzari 5 Giampiero Naletto 5, 16, 26 Nilda Oklay 4 X. Shi 4 Nicolas Thomas 27 B. Poppe 1 
Abstract : 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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Submitted on : Wednesday, May 9, 2018 - 4:35:36 PM
Last modification on : Tuesday, May 3, 2022 - 11:04:03 AM
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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, Elsevier, 2017, 143, pp.256-264. ⟨10.1016/j.pss.2017.04.018⟩. ⟨insu-01515014⟩



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