The SSI used a 17.6 cm Cassegrain telescope to form an image on a 800 x 800 pixel solid-state CCD array. The harsh nature of Jupiter's radiation belt meant that this CCD array had to be shielded by a 1 cm thick shroud of tantalum. The device contained an eight-position filter wheel, which had narrowband filters covering various wavelengths between 400 nm and 1,100 nm. The central filter wavelengths were: 611 nm, 404nm, 559nm, 671 nm, 734nm, 756nm, 887nm, and 986 nm and the overall field of view of the camera was 8.1 x 8.1 mrad, which converts to 10.16 x 10.16 ^rad/pixel. Both the optical system and the filter wheel were inherited from the Voyager ISS narrow-angle camera. At closest approach the spatial resolution was 11 km.
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