Spider Assembly for Newtonian Telescope

This thing allows you to precisely position and align the 45 degree secondary mirror on a Newtonian telescope.

It is designed around a 1 inch (minor axis) mirror, but you could conceivably use a much larger mirror.

The facets on the mirror holder sides make it easy to adjust it's alignment

Nov 4 '11- I updated the files for three changes
- There are now niches for M3 nuts for the collimation screws.
- The main M4 screw now has a conical hole on the angled part, so the part can now pi