Stepper Motor Focus for Mak127 Telescope
thingiverse
Never remove the focus wheel when the telescope is pointing downwards! On Maks and possibly SCs, the main mirror can drop and be severely damaged. To prevent tube rotation, I use a zip tie as shown above. This stepper motor focus assembly is designed for Celestron or Skywatcher Mak 127. It's Arduino-based and comes with ASCOM drivers to control it smoothly. Check out: https://sourceforge.net/p/arduinoascomfocuser/wiki/Home/ Via ASCOM and live view, you can even have temperature-compensated automatic focusing capabilities. My controller also includes a dew cap heater and Bluetooth connectivity for wireless control.
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