Kowa Adapter Ring for Astronomical Eyepieces (Knurled Screw)

The Kowa Adapter Ring for Astronomical Eyepieces (Knurled Screw) gives your TSN-770 or TSN-880 Series Spotting Scope incredible versatility by making it compatible with 1.25" astronomical eyepieces. Simply remove your Kowa eyepiece from your scope and screw this adapter into the scope's threaded eyepiece opening. You can then slide the 1.25" eyepiece into the adapter and secure it via the two knurled screws. The adapter is also compatible with Kowa's 1.6x Eyepiece Extender for deep space observation and photography. TSN-99x scope bodies have a focal length of 583mm and the TSN-880/770 bodies have a focal length of 500mm.