My custom homebuilt goto rocker box run by Mel Bartel's wonderful scope control. Nema 23 steppers with flywheels,hurst gearboxes,lots of custom maching in alluminum for drive system parts, 12"od alluminum alt bearings.
Rocker box desighned for a 14" id sonotube dob.
Toshiba laptop included to run Mel's software. Laptop also has The Sky III and ECU loaded.
If you've wanted to convert your bump-n-shove 12.5" dob to full goto and tracking in the alt/az mode, Mels system is amazing. It can even compensate for mechanical flaws in the rocker box construction. No platforms to rewind after an hour. Will continuously rotate a full 360 deg and track for hours on a single object.
Only selling because my 12.5" is becoming a photo-only scope and the rocker box is just sitting there not being used.
prefer pickup in NE Ohio as I would like to go over the funtions with the buyer.
Serious inquiries only please.
Thanks for looking !