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Starlight Instruments is proud to announce the release of the SI-RCEF which allows you to electronically control the helical focuser of the William Optics Red/Space Cat 51mm Telescope with a modified version of our Handy Stepper Motor (HSM).

The RCEF motor is controlled with either the Starlight Instruments Electronic Focusing System (SI-EFS) or the Focuser Boss II. Both controllers are sold separately.