I first want to express my thanks to all who are involved with the StellarMate/KStars/EKOS/INDI technology.  The current StellarMate 1.61 version has been rock solid on my two mounts.  I haven't had a crash or abort of any kind since I upgraded.  Well done!

The one "fly in the ointment" for me is auto-focus.  I continue to use polynomial, but the results have been inconsistent.  For instance, last night it focused perfectly on the initial operation, but focused badly for the next three through the night.  Unfortunately, it wasted a great above average seeing night.  Bummer.

I'm not sure what is happening... It's like it is focusing on different objects (spots?) at each iteration and gets misled into thinking the focus is better (I use darks).  I'm sure that backlash is also contributing to the problem, but I've worked carefully to get the best number to use.  Bottom line... I'm going to abandon polynomial focusing in the short term and go back to linear.

So... I could use some recommendations and/or best practices for linear focusing.  I'm using a 80mm refractor with an ASI EAF focuser.  My focal setting is usually around 14,900 with my ASI183MC Pro.  What are good settings for the "Mechanics" tab, particularly Initial Step Size and "Out Step Multiple"?

Thanks!

Ron

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