I have recently bought a Celestron nexstar 130 slt and is very happy with my purchase so far. For a entry level scope it has proven to be quite acceptable...with a couple of modifications

The only thing that I am having difficulty with is the focuser...when trying to achieve that sweet-spot where everything is Crystal clear i always either move past it or just before it. I have an idea of building an auto focuser that would have different speed levels. Has anyone ever done this and if you have could you maybe let sneak a peak at your designs?

Would be greatly appreciated.