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For what it is it does a pretty good job as far as short focal length and wide field goes. The motor fits onto the ra slow motion shaft and there is a small knob you turn to fine tune the tracking speed. You need to see if the supplied coupling is the same diameter as your slow motion shaft, but you can get various sizes on ebay if needed. It is a cheap way to have a dabble in some astrophotography and a bit of tracking makes visual a lot easier as well especially at higher magnifications. As with any tracking you still need to learn how to get good polar alignment.
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