Have you been looking for hat perfect off axis guider. You need to have a C-11 or C-14. I have taken lots of great picture with guider over the years but with my CCD Setup I havn't used it for 2 years. It's in great shape. I am looking to get 265.00 +Shipping for it and a new one is only 400.00. It comes with the OM-1 adapter.