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figures/telescope.jpg
Diagram of the CoRoT telescope
Crédit : Paris Observatory / UFE

CoRot measures the light variations coming from stars with a very high accuracy.

Every perturbation of this intensity, caused by the instrument itself or by the spacial environment, must therefore be minimized, and in particular, the parasitic light generated by the Earth must be minimized.
This is what has determined the optical design of the instrument.

CoRoT is a wide-field telescope with a diameter of 27 cm, working in the visible domain, which collects and concentrates photons, and form an image of the sky on the detectors installed in the focal block.

An equipment compartment contains all the electronic equipement required for the function of the instrument, and the on board calculator responsible for data processing.