Oknoder wrote:
I could be wrong but how I understood how St4 worked was based on relays, either on/off open/closed, and not PWM, instead of modulating the pulse the relays in a camera with St4 capabilities would turn power on and off to either the RA or Dec axis accordingly, depending on the correction error.
Like I said, could be wrong, just how I understood it.
Matthew
All of the techno stuff is far above my paygrade...but according to Chris Shillito, developer of EQASCOM, both send pulses. Chris didn't feel one did a better job or the other. But he does say, the use of pulse guiding has the advantage of knowing where the scope is pointing in the sky. ...and for me, I think it does work better but would not know how to confirm this - gut feeling I guess.