20+inch+F3.8+Construction

Images below of the 20 inch F3.8 in final construction

Below image is of the top box before the focus board and spider is added. It is made of 2 x 3/4 inch thick rings of plywood and separated by 20mm wodden dowls.

Mirror box is made of 3/4 ply (top and bottom), and 9mm plywood sides.

Mirror support is play and aluminium. The triangles are help in place to prevent rotation by a think plastic disc and velcro pads. See 20 inch F3.8 Mirror support

Completed mirror support in place

Un-aluminised mirror on the mirror support

Removable counter weights to make transportation lighter and easier.

Top cage with focus board and 10x 50mm finder.



Telescope almost completed, with temporary wooden poles for testing prior to the aluminium poles being cut. August 2011. Image below is from March 2012 near completion of the tube and mount.