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The JMI Telescope Motofocus is a battery powered electronic focus controller compatible with select iOptron MC90 telescopes. Using this electronic focuser, stargazers have the ability to precisely control the focus of their eyepiece while minimizing slight vibrations that can influence the focus of the transmitted image. Variable speed focusing provides the operator with the ability to correct focus in coarse and fine increments. The Motofocus runs on only one 9V battery and quickly attaches directly to the telescope focuser.