There's another simple way to decrease tracking error for a barn door mount, and that is to use a curved bolt with an appropriate radius of curvature. See Gary

There's another simple way to decrease tracking error for a barn door mount, and that is to use a curved bolt with an appropriate radius of curvature. See Gary Seronik's 2007 article [0]. [0] https://garyseronik.com/a-tracking-platform-for-astrophotography/ https://garyseronik.com/a-tracking-platform-for-astrophotogr...