Astronomy and Space News - Astro Watch: Cheops in the Clean Room

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Tuesday, March 12, 2019

Cheops in the Clean Room

Credit: ESA – S. Corvaja

The copper-colored baffle cover of ESA's Characterising Exoplanet Satellite, Cheops, is seen in the clean room at Airbus Defence and Space Spain, Madrid.

After completing spacecraft testing, the satellite has passed a very important review that determined it is ready to fly. Cheops will be stored in Madrid for a few months before being shipped to the launch site in Kourou, French Guiana; launch is scheduled in the time slot between October 15 and November 14, 2019.

The baffle cover pictured in this image is designed to protect the satellite’s scientific instrument – a powerful camera, or photometer – during assembly and launch. Once in space, the cover will open, allowing light from stars to enter the telescope.

Cheops will make observations of exoplanet-hosting stars to measure small changes in their brightness due to the transit of a planet across the star's disc, targeting in particular stars hosting planets in the Earth-to-Neptune size range. The information will enable precise measurements of the sizes of the orbiting planets to be made: combined with measurements of the planet masses, this will provide an estimate of their mean density – a first step to characterizing planets outside our Solar System.

Cheops paves the way for the next generation of ESA’s exoplanet satellites, with two further missions – Plato and Ariel – planned for the next decade to tackle different aspects of the evolving field of exoplanet science

Credit: ESA


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