Shoestring FCUSB2 Focus Motor Controller for second focuser

The FCUSB is a product that allows you to control a DC focus motor (or any DC motor for that matter) by way of a USB port and software on your computer. If you are already using a computer in your observatory for other reasons, this provides a way for you to focus your telescope without fumbling around in the dark for the focuser handcontroller. It works best with 5 V focus motors such as the newer style JMI Motofocus, but can also work with 9 V or 12 V motors. Motors requiring up to 100 mA of current will work with the FCUSB.

Why the FCUSB2?

Many astrophotographers need to use two focusers, one for their imaging scope, and one for their guide scope. One of the inherent problems with most USB devices is that when two of them are used, they will appear identical to the computer and there is no easy way to tell one from the other. Thus, Shoestring Astronomy created the FCUSB2.

It is identical to the FCUSB in all respects except for its USB identifier. So, if you wish to run two focusers, you will need a FCUSB and a FCUSB2.

FocusPal Software

It is a stand-alone program that allows you to control the speed of your focus motor, and to run the motor in and out. It is free and can be downloaded.

Safety informations: PDF Download