The PRISMA hyperspectral mission of the Italian Space Agency allows all registered users to request targets of their interest. To improve the offered service, after an extensive test phase, a software tool is officially online that can be used free of charge and without registration to evaluate the feasibility of future acquisitions. With the simple input requested, the users can have a reliable estimate of the date and time of acquisition and the observation conditions, i.e. roll angle and solar zenith angle. The tool can be reached at the link: http://prisma-prefeasibility.asi.it/
