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

Tulyakov, Stepan; Ivanov, Anton; Thomas, Nicolas; Roloff, Victoria Ann; Pommerol, Antoine; Cremonese, Gabriele; Weigel, Thomas; Fleuret, Francois (2018). Geometric calibration of Colour and Stereo Surface Imaging System of ESA’s Trace Gas Orbiter. Advances in space research, 61(1), pp. 487-496. Elsevier 10.1016/j.asr.2017.10.025

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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.

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