  Euclid is the second medium-size mission (M2) of the ESA Cosmic Vision
Program, currently scheduled for a launch in 2020. The two instruments on-board
Euclid, VIS and NISP, will provide key measurements to investigate the nature
of dark energy, advancing our knowledge on cosmology. We present in this
contribution the development and manufacturing status of the VIS Read-out
Shutter Unit, whose main function is to prevent direct light from falling onto
the VIS CCDs during the read-out of the scientific exposures and to allow the
dark-current/bias calibrations of the instrument.
