https://bugs.kde.org/show_bug.cgi?id=414967

            Bug ID: 414967
           Summary: Focuss module issues at F2
           Product: kstars
           Version: git
          Platform: Compiled Sources
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: mutla...@ikarustech.com
          Reporter: jrlangsto...@gmail.com
  Target Milestone: ---

When using focuss module with a F2 RASA the underlying algorithms are not
suited to developing a vcurve at F2.  Basically the method used tries to
establish a curve and if it's having trouble it sets a very high step of around
600 to even 4000! assuming that the system is slow I guess

But at F2 any steps more than say 150 will just produce a large donought that
isn't recognised as a star or not even visible.  This occurs with gradient,
iterative, polynomial etc.

It seems to do this as a very shallow curve is produced as focuss changes with
only a small amount of steps and larger steps result in no stars being
recognised. maybe it expects a steeper curve?

A possible solution is to have an input box that specifies the maximum number
of steps the software will make in any single focuss movement.  This way if I
know steps above 150 will produce donoughts I can limit maximum step to say
100.

Issue has occurred on all versions incl current git using celestron sct indi
driver.

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