JMI

More Information Price $63.00 Weight 8 oz Warranty 1 year

This new Pulse-Width Modulation (PWM) hand control contains a 9-volt transistor radio battery (supplied) with a life expectancy of 6-8 months in normal use. The coiled cord from the focuser plugs into a 1/8" pin jack on the top of the hand control. Pushbuttons control the direction of focuser travel. The hand control has a small three-position (high / medium / low speed) slide switch that adjusts the motor’s speed for very precise fine adjustment of the focus when the directional buttons are pushed. The three slow speeds each ramp up to high speed if the directional button is held down for two seconds. This lets you make major focus changes quickly, without giving up the precision fine correction ability. Quick-stop electromagnetic braking avoids overshooting the focus point at all speeds. When used with the #2407 focuser for the LX200, the variable speed control on the motor itself should be left at its high speed setting.

The hand control can also be used for controlling JMI declination motors when the telescope has only a single axis r. a. drive system with no built-in provision for dual axis operation.