EUCLID

EUCLID is a M-Class mission composed of a 1.2m diameter telescope and two instruments to map the 3-D distribution of up to 2 billion galaxies and dark matter associated with them. The visible instrument (VIS) will provide shape measurement of the galaxies and the Near IR Spectrometer Photometer (NISP) will measure the galaxies redshift.

CSL participate in various instruments on board EUCLID, to be launched in 2021 ; it will observe a very large number of galaxies in order to analyze the dark matter and dark energy that represent about 95% of the total energy of the universe. Very soon we shall test the collimator as well as the payload module of that satellite.

Under the PRODEX umbrella, the activities performed by the CSL in this specific EUCLID related project are:

• to measure the deformation of the NISP detector system (NI-DS) when cooled-down to about 95K with an accuracy of 1μm. The NI-DS is a FPA of 16 detectors. 

• to perform vibration testing of three NISP models.

• to perform vibration testing of two VIS models and optical metrology on the FPA between vibration tests.