Televue photographic field flattener outfit for Ranger (also Pronto) telescopes, TV part #RPF-2804. This enables the Ranger telescope to be used as a telephoto lens with a flat field at f7.4 with a focal length of 520mm. Condition is near mint. This outfit comes with a TeleVue 1.25in. to T-Ring adapter, TV part #ACM-1250. It also comes with a Nikon T-Ring, though other T-Rings could be substituted by the buyer. The new cost for these items is $145
Price is $70.00 shipping included to continental US.