Barndoor camera mount corrector

This is a tangent-error corrector for a barndoor camera mount. The default dimensions are for a mount based on a straight 1/4"-20 carriage bolt drive located 292mm from the hinge. The corrector should be installed 287.1mm from the hinge center, opening outward. You can cut or 3D print.

For build instructions, see [this Instructable](https://www.instructables.com/id/Simple-Manual-Star-Tracker-for-Astrophotography/).