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AstroSystems Dobsonian Telescopes, Telescope Accessories and Parts

AstroSystems - Groundboards

Round Groundboards

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.

AstroSystems - 19.5 inch Round Groundboard
For 12.5 inch telescopes - with 8.7 inch bearing

$ 99.00

AS_RGB_19.5

AstroSystems - 20 inch Round Groundboard
For 13.1 inch telescopes - with 9.1 inch bearing

$ 109.00

AS_RGB_20.0

AstroSystems - 21.4 inch Round Groundboard
For 14.5 inch telescopes - with 9.75 inch bearing

$ 119.00

AS_RGB_21.4

AstroSystems - 23.2 inch Round Groundboard
For 16 inch telescopes - with 10.6 inch bearing

$ 129.00

AS_RGB_23.2

AstroSystems - 24 inch Round Groundboard
For 17.5-18.0 inch telescopes - with 11 inch bearing

$ 139.00

AS_RGB_24.0

AstroSystems - 27.8 inch Round Groundboard
For 20 inch telescopes - with 12.9 inch bearing

$ 149.00

AS_RGB_27.8

AstroSystems - 29.8 inch Round Groundboard
For 22 inch telescopes - with 13.9 inch bearing

$ 159.00

AS_RGB_29.8

AstroSystems - 32.2 inch Round Groundboard
For 24 inch telescopes - with 14.6 inch bearing

$ 189.00

AS_RGB_32.2

AstroSystems - 33.5 inch Round Groundboard
For 25 inch telescopes - with 15.2 inch bearing

$ 199.00

AS_RGB_33.5

AstroSystems - 36.4 inch Round Groundboard
For 28 inch telescopes - with 16.7 inch bearing

$ 209.00

AS_RGB_36.4

AstroSystems - 38.6 inch Round Groundboard
For 30 inch telescopes - with 17.8 inch bearing

$ 229.00

AS_RGB_38.6

AstroSystems - 40.6 inch Round Groundboard
For 32 inch telescopes - with 18.8 inch bearing

$ 249.00

AS_RGB_40.6

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