From left to right: QHY5 (the IR Filter on the QHY5 is my addition, not supplied with the KWIQ Guider kit), custom adapter (T-thread on one end, threads to match the 50mm finder scope on the other end), 50mm finder scope.

The 50mm finder scope appears identical in size and shape to the finder that came with my Celestron C11. The threads *seem* to match, but were a little bit tight so I didn't push it too hard to see if they were interchangeable. However, I'd bet that they are.

The adapter is the key component that makes this whole thing work - if you happen to have a QHY5 (or Q-guider or Orion StarShoot AutoGuider, all of which are the same thing) and if you have a 50mm finder scope that looks like this one, all you probably need is the adapter, which is available individually from KW Telescope.