Takahashi MC LE 50 mm eyepiece, 2-inch barrel. Part number TKA00531

Still in the original plastic bag and original Takahashi box. Dealer label on the box reads $500.00, TKA00531, TAK LE-50MM, OCULAR 2IN (R-7.1). Barrel is marked MC LE 50mm. I have not removed it from the bag, so the optics have not been inspected under a light. From the outside it appears unused.

The LE series is Takahashi’s long-eye-relief line, made in Japan, and is now discontinued. Five elements in three groups, fully multi-coated. Best matched to scopes around f/7 to f/10, and especially Takahashi Mewlon / Dall-Kirkham scopes with the CRS corrector, where the 40 mm and 50 mm were optimized for a flatter field.

Specs (Takahashi):

•  Focal length: 50 mm

•  Apparent field: 52°

•  Eye relief: 40 mm (comfortable with glasses)

•  Barrel: 2 inch (50.8 mm)

•  Height: 151 mm

•  Diameter: 63 mm

•  Weight: 530 g

Low-power deep-sky eyepiece for long-focal-length scopes. On a 2000 mm focal length it gives 40x; on a 2500 mm scope, 50x. Threaded for 2-inch filters.

Ships in the original box, well packed