WILLIAM OPTICS SCT ADAPTER FOR DIAGONALS

The William Optics SCT adapter allows you to connect standard 2" barrel refractor diagonals to Schmidt-Cassegrain telescopes with a standard 2"-24 thread, rather than having to buy a dedicated SCT diagonal.  The other side has an M48 x 0.75 male thread for connection to common accessories.

To install, simply unscrew the barrel nosepiece of your diagonal and replace it with this adapter. Compatible only with 2" diagonals.