The business end of the scope, the secondary cage is built as light as possible to allow the scope to balance near the rear. I used the traditional design, two high grade plywood rings held apart by aluminum struts and a sheet of kydex plastic to block the light.

As seen in the photo I mount a Telrad, an AstroSystems Phase-4 2" crayford focuser and the electronics unit for the digital setting circles all in very convenient positions. Als used is an AstroSystems spider and secondary holder. I like the four screw arrangement on the secondary holder. Setup in a push-pull design the four screws allow really easy collimation of the secondary.

I added a machined aluminum ring over the knob of the focuser to expand the knob size and make it much more finger friendly.

Update: The Astrosystems phase IV was a decent focuser, but the Feathertouch is better! The Phase IV was replaced in 2004 with a Feathertouch, a very nice improvement.