Early version of Takahashi (known as TS afocal adapter (TS-001 eyepiece projection adapter) with built-in filter drawer.
It takes 24.5mm (0.965") eyepiece and 40.5mm filter.
Top part (silver) is Vixen 36.4mm male thread and bottom part is standard 42mm male thread.
It is in very good condition with minor user marks. Box is included.
3rd party 1.25" nose piece is also included.
Filed under: Eyepieces & Accessories