Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 – 23 September 2022
Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 September – 23 September 2022
EPSC Abstracts
Vol. 16, EPSC2022-476, 2022, updated on 08 Jan 2024
https://doi.org/10.5194/epsc2022-476
Europlanet Science Congress 2022
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

First results of super-resolution mapping of Enceladus’ surface, based on new navigation and photometric correction function

Christos Ntinos1, Sebastien Rodriguez1, Nicolas Altobelli2, Stephane Le Mouelic3, Rozenn Robidel4, Benoit Seignovert3, Gabriel Tobie3, Thomas Cornet2, and Claire Vallat2
Christos Ntinos et al.
  • 1Institute de Physique du Globe de Paris (IPGP), Paris, France
  • 2European Space Astronomy Centre (ESAC), Madrid, Spain
  • 3Laboratoire de Planétologie et Géosciences (LPG), Nantes, France
  • 4Laboratoire atmosphères, milieux, observations spatiales (LATMOS), Paris, France

The main objective of this research project is to develop super-resolution mapping methods to increase the spatial resolution of surface maps of icy moons of the Solar System by combining all the overlapping observations acquired during a given planetary mission. Cassini-Huygens was the first dedicated mission to Saturn, where it spent 13 years studying the gas giant and its system of moons and rings creating a treasure-trove of data. The focus of this study is to create global surface cartographic products in the infrared by evaluating the Cassini’s Visual and Infrared Mapping Spectrometer (VIMS) hyperspectral dataset in its entirety. We will first focus our efforts on developing, testing and validating the methods on Enceladus, a prime astrobiological candidate, which, in contrast to Titan, does not require any atmospheric corrections. We offer a new module in Python for creating the navigation cubes necessary in merging individual cubes into global mosaics, increasing the accuracy of the covered area and maximising the number of pixels used (e.g. limb-crossing pixels). Moreover, this new module, allows us to explore the Enceladus VIMS dataset in its entirety. We then determine a surface photometric function which mitigates variations in the brightness due to the changing geometric conditions of the flybys. With a precise and comprehensive navigation and an accurate surface photometric correction, we can apply the super-resolution method and present some preliminary maps with enhanced spatial resolution and signal-to-noise ratio.

How to cite: Ntinos, C., Rodriguez, S., Altobelli, N., Le Mouelic, S., Robidel, R., Seignovert, B., Tobie, G., Cornet, T., and Vallat, C.: First results of super-resolution mapping of Enceladus’ surface, based on new navigation and photometric correction function, Europlanet Science Congress 2022, Granada, Spain, 18–23 Sep 2022, EPSC2022-476, https://doi.org/10.5194/epsc2022-476, 2022.

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