The SPA Telescope


12. Align Main Mirror


Look through 5 mm paper eyepiece hole again and adjust main mirror's clips until everything is symmetrical, as shown.

13. Cut Rings


Cut two rings of tube material, and cut out two triangles on opposite sides, as shown.

Use a paper template to help marking out.

14. Fix Rings to Tube


Cut two strips of tube plastic and fix to rings with small nuts and bolts, or with small woodscrews, so tube s clamped between.

If tube slips, enlarge holes in strips and add washers to screws so you can adjust ring separation slightly.