The overly high tech methods used in the project amuse me: design it with a CAD system, use a laser cutter to cut the wood, design your own gears, write C program for microcontroller to driver stepper motor- (advantage: easily adjust for astrophotography from other planets). It's too much meta-work.<p>So here is my new challenge: make it using only parts and tools available from Home Depot.<p>(even so, I have to get one of these laser cutters..)