Intes MN-71 180mm Maksutov-Newtonian f/6 OTA in excellent to mint condition with parallax or clone rings. Compare to the MN-76 version which sells new for $2600. This basic unit has a helical focuser (crayfords are available for this ota). I do not have a finder or finder bracket for this OTA. Fantastic optics. See the many reviews written on these Intes Mak-Newts.