Division of Electronics, Detectors and Computing for Physics (DEDIP)

The Astrophysics Department of CEA-Irfu, which has scientific and technical responsibility for the MIRIM imager (Mid Infrared Imager) on the MIRI spectro-imager, one of the major instruments of the forthcoming James Webb Space Telescope (JWST), has just delivered the final model of the imager to the Appleton Rutherford laboratory in England, who will carry out the final test before the delivering it for integration into the JWST at the start of 2011 [1]. The JWST, a joint mission of the American (NASA), Canadian (CSA) and European (ESA) space agencies, is a satellite weighing more than 6 tonnes and containing a 6.5 m diameter telescope whose launch, on an Ariane 5 rocket, is planned for mid-2014.

The MIRIM camera is a key instrument for achieving the main objective of the JWST which is to explore the universe as it was 13 billion years ago, at the moment when the first luminous objects were formed. MIRIM should be able to make major new discoveries in understanding the formation of stars and galaxies, as well as contributing to the search for remote planets thanks to a very innovative device, the phase mask coronagraph, which allows the light from a star to be "extinguished" in order that any potential planet close to the star can be seen more easily.

 View the animation showing the "extinguishing" of a star in the coronagraph