AstroSystems - 29.8 inch Round Groundboard

For 22 inch telescopes - with 13.9 inch bearing

Retrofiting your telescope with a GOTO drive?  Use our precision CNC cut round Ground Board for accuracy. Our Ground Boards
feature Baltic Birch plywood, strong and very wear resistant as well as one foot having an internal mount for the Power Feed
Through plug.  Each comes with ball bearings at two positions and Teflon at the third (requires smooth laminate on the Rocker Box
bottom).  Smooth movement for lower torque and longer battery life. We can supply with three Teflon pads if you prefer to keep the
textured (Ebony Star or Pebble Board) laminate on the Rocker Box.  The sizes listed below are a guide, use the largest bearing
radius that your rocker box will accommodate.