Design of the VenSpec-U instrument on board EnVision

VenSpec-U, part of the EnVision mission's VenSpec suite, aims to measure sulphured gases and UV albedo variations at Venus’ cloud top, and their possible link to active volcanism. This spectral imager features a dual-channel architecture, with high and low spectral resolution channels, and will provide maps of SO, SO2 and cloud properties at kilometric scales. This paper will present the current instrumental design and how it complies with the scientific requirements.