Test bench for star sensor, and test method

The invention relates to a test bench (1) for a stellar sensor, characterized in that it comprises: - a stellar sensor (2) comprising a protective baffle (3), - a collimator (7) mounted on one end of the protective baffle (3), - a screen (5) able to display a scrolling portion of the sky, the screen (5) being disposed at the focal distance of the collimator (7), so as to project toward a sensitive surface (15) of the stellar sensor (2) a collimated image of the scrolling portion of the sky.