The advantages in a nutshell:
RA axis motor for automatic tracking
drives the main axis of the telescope
well suited to visual observing
comfortable to use: manual adjustment is no longer necessary
straightforward assembly, only taking a few minutes
handbox for 2X and 8X tracking speeds
switch for northern and southern hemispheres
It's a clear starry night. The object is located in the field of view, the planet Jupiter perhaps. You watch how the planet rapidly moves out of the field of view. The manual slow motion controls of your telescope allow you get the object back into the field of view...
This is also possible automatically
Take the easy way and use the tracking motor for your Startracker EQ-3 mount. It saves you constantly having to adjust the position of the telescope by hand. Simply connect it up and you can concentrate on observing.
The motor now does all the work, and from now on will move your telescope at exactly sidereal speed. The object remains permanently in the field of view, as long as the motor is running!
Along with the Startracker motor, you will also get a hand box for controlling your telescope. Four large buttons are used for 8X and 2X sidereal speeds, and there is also a pause button. This enables you to move an object into position in the field of view at a higher speed.
In addition to the ON/OFF switch, there is a switch for selecting which hemisphere you are located in. This means the Startracker RA tracking motor will work anywhere in the world. The hand box is easy to hold and operate, so you are always in control even with gloves on.
Advantages:
RA axis motor for automatic tracking
powers the main axis of the telescope
suitable for visual observing
easy operation - manual tracking no longer necessary
easy installation which takes only a few minutes
hand box for 2X and 8X speeds
switch for Northern and Southern hemispheres
battery compartment, with cable, for six D batteries
buy batteries separately from a local shop