Ellipse

ScottPlot.Plot myPlot = new();

for (int i = 0; i < 10; i++)
{
    var el = myPlot.Add.Ellipse(0, 0, 1, 10, rotation: Angle.FromDegrees(i * -10));
    double fraction = i / 10.0;
    el.LineColor = Colors.Blue.WithAlpha(fraction);
}

// force circles to remain circles
ScottPlot.AxisRules.SquareZoomOut squareRule = new(myPlot.Axes.Bottom, myPlot.Axes.Left);
myPlot.Axes.Rules.Add(squareRule);

myPlot.SavePng("demo.png", 400, 300);