Takahashi Feldstein #3 Adapter Wide mount to EXT-Q thread (TCD0007)

The Feldstein adapter is threaded internally for Extender-Q and has external Takahashi wide threads designed exclusively to fit the Takahashi FS-102, FS-128, FS-152 and FSQ-106 Refractor telescopes.

The Feldstein adapter is used for focuser ends found on some Takahashi telescopes to mate items such as a camera to the telescope - or the other end has SCT thread which allows use of SCT-threaded items such as visual backs, T-adapters, etc. The Feldstein adapter allows for the use of alternate equipment and each adapter is designed for specific thread patterns as specified.