I bought these a year ago to improve a homebuilt achromat, but the project didn't work out, and now I guess it never will. Selling the below as new. Prefer to sell as a set.
-Takahashi extender-Q, caps, box, instructions and adapter-q to use extender-Q with a 2" diagonal, original cardboard box. $235 shipped in CONUS.
USPS money order or personal check (must wait for clearance) only, please.
***1.25" adapter in photo is already sold.