Range : 660,000 km. ( 412,000 miles ) P-34711 This Voyager 2 wide angle photograph shows the shadow of Neptune on the rings. Because Neptune's shadow casts a curved profile on the rings which does not quite reach out to the outermost ring at about 38,000 km. (24,000 miles) from the cloudtops. In this photo, taken through the clear filter at a phase angle of about 135 degrees, the shadow does fall on the inner bright ring ( at about 28,000 km. (18,000 miles) from the cloudtops. The shadow also clearly delineates the radial extent of the broad sheet of material discovered extending from about halfway between the bright rings down to, and perhaps beyond the inner bright ring. A very thin, brighter of the edge of this diffuse sheet can also be seen. additional information from other images indicates that this faint material extends further in, to at least the position of the innermost faint ring discovered at about 17,000 km (11,000 mi.) from the cloudtops.