The MountOne & The Four Astrographs.

The MountOne GOTO Telescope Mount uses two high performance 0.9° stepper motors coupled to two 5-stage 405:1 belt-driven reduction-drives.

The MountOne is able to track with a computed  resolution of 0.25 arcseconds per-step while still being able to slew at 3° a second.

The MountOne can be 3D Printed on machines with a build volume of 180x180x180 or larger.

MountOne | Documentation.