I use the autofocus routine in the Ekos focus module and it works well. I stuck with the default detection setting of gradient and the default algorithm of iterative. It tried the relatively new linear algorithm outlined in this link, but I never got it to achieve focus correctly: knro.blogspot.com/2020/02/kstars-v340-is-released.html

To be fair, I tried it once and just haven't had an opportunity to go back to it and troubleshoot. The default settings have been good enough for me since my attention has been on tweaking other areas of the setup. I'm pretty happy with my configuration so far, so it might be a good time to play with the linear algorithm again.

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