RedCat 51 Rotation Collar

There is a rotator built into the RedCat 51. It's manual but it uses a finely graduated ring with degree markings. By lining up a pointer on the rotator to the markings on the ring, precise angles can be set.

The problem is that the pointer doesn't line up with the camera - not on mine, anyway. When the camera is upright, the pointer is on the underside of the telescope. The ring with degree markings can be rotated but the zero and nearby markings would still be on the underside of the scope. Then, too, the relationship between the pointer and the camera could change arbitrarily depending on the adapters, filter, filter holder (or wheel) and the camera.

It would be nice if the pointer was adjustable and independent from the rotator so it could align with the camera regardless of the consist of the optical train. That's what this project is for.

There are two rings. The first is very simple with its only adornment being a notched box to hold the pointer. The pointer itself is a