Thanks for your answer
I went through the documentation (should have done that first!... RTFM as they say) and you are correct about DC focuser being supported.
"While Ekos Focus Module support relative focusers, it is highly recommended to use absolute focusers."
and the documentation lists the difference between the types of focuser:
- Absolute: Absolute Position Focusers such as RoboFocus, MoonLite..etc
- Relative: Relative Position Focusers
- Simple Focusers: DC/PWM focusers with no position feedback
There is a little catch for DC focuser : "For absolute and relative focusers, the step size is in units of ticks and for simple DC focusers, the step size is in milliseconds"
Right now, I focus manually using a bathinov mask, so, if I understand correctly, I could use the autofocus module and rely on the Half-Flux-Radius (HFR) method and ditch the bathinov mask ? I plan to set the focuser to an already "close to focus" position and let the autofocus module refine the focus. Does that make sens ?