Skywatcher 150PDS Spider

This is a remixed version of hcrispy's https://www.thingiverse.com/thing:6170390

The secondary mirror holder features larger inset screw holes to allow for M4x7mm threaded inserts. Hopefully this should make the mounting stronger and less susceptible to stripped threads if you're a bit heavy handed like me.

Outer holes for mounting to the tube are M8x1.25 threaded. A M8x10 - 12mm bolt should be sufficient for mounting with no protruding nuts / threads into the light path.

I've also added the design file for Fusion 360 should anyone else like to make modifications.

** Updated - I've increased the diameter slightly for a nice snug fit into the tube. I've also included ~2mm washers for the M8x10mm mounting screws. They ensure threads don't protrude into the light path.