I have been trying to use an OCAL running on my MacBook pro computer to collimate a Sharpstar 13028HNT hyperbolic newtonian and despite emails back and forth from the OCAl tech team, they really are not compatible. The issue is that no matter how you mount the OCAL camera to the Sharpstar using a direct connect to the 48mm Sharpstar adapter or the 1.25 collimating adapter, you cannot adjust the OCAL "circles" size and horizontal/vertical offsets to properly encircle the focus tube. And until that is done, you cannot collimate the scope. Has anyone had any luck using the OCAL with the MacOS download software to collimate their Sharpstar?