Met up with Tom How for the first time in quite a while and he brought along the stepper motor/Arduino drive unit for auto-focusing the Canon 200mm lens.  Focusmax talks to the unit (and to Maxim DL) and it all looks the business.  Just need to have the top plate off the mini-WASP AGAIN to replace the JMI electric focuser with this stepper and I should be in business.  Yet another quality astronomical product from the Tom How factory 🙂

 

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