The MOTOFOCUS for Astro-Tech 10” RC Astrograph Telescope from JMI Telescopes is a battery-operated hand control with an electric focus motor that attaches to the shaft of a focuser knob (or the knob itself) for precise, vibration-free focusing without the need to touch the telescope. It is suitable for viewing and for photography and features variable speed for coarse and fine adjustments. Precise positioning is achieved through electronic braking. Mounting it is easy and requires no drilling or tapping. The optional Digital Read-Out (DRO) and Digital Focus Counter (DFC) (sold separately) provide improved focusing accuracy and repeatability.