Geometric calibration of Colour and Stereo Surface Imaging System of ESA's Trace Gas Orbiter

Stepan Tulyakov, Anton Ivanov, Nicolas Thomas, Victoria Roloff, Antoine Pommerol, Gabriele Cremonese, Thomas Weigel, Francois Fleuret

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


There are many geometric calibration methods for “standard” cameras. These methods, however, cannot be used for the calibration of telescopes with large focal lengths and complex off-axis optics. Moreover, specialized calibration methods for the telescopes are scarce in literature. We describe the calibration method that we developed for the Colour and Stereo Surface Imaging System (CaSSIS) telescope, on board of the ExoMars Trace Gas Orbiter (TGO). Although our method is described in the context of CaSSIS, with camera-specific experiments, it is general and can be applied to other telescopes. We further encourage re-use of the proposed method by making our calibration code and data available on-line.

Original languageEnglish
Pages (from-to)487-496
Number of pages10
JournalAdvances in Space Research
Issue number1
Publication statusPublished - 1 Jan 2018
Externally publishedYes


  • CaSSIS
  • Geometric calibration
  • Off-axis
  • Optical distortion
  • Rational distortion model
  • Star field
  • Telescope
  • TGO


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