Characterization and performance of PAUCam filters

PAUCam is a large fieldof view cameradesigned to exploit the field delivered by the prime focus corrector of the William Herschel Telescope, at the Observatorio del Roque de los Muchachos. One of the new features of this camera is its filter system, placed within a few millimeters of the focal plane using eleven trays containing 40 narrow band and 6 broad band filters, working in vacuum at an operational temperatureof 250K and in a focalized beam. In this contribution, we describe the performance of these filters both in the characterization testsat the laboratory.