The ultimate  star finder that utilizes plate solving.
All you have to do is point Astroid at the starry sky.
Astroid will guide you to the stars, clusters and nebulae you want to  see.
No more complicated encoder settings.
Any type of altazimuth mount or equatorial mount is okay.
You just need to plug in Astroid instead of the viewfinder.
size    : 90mm x 60mm x 95mm
weight : 346g
Price : 600$(including shipping)