 
         context.clear(rect)
 
+        let rootValue = 1.0/(2.4 * 1.085)
+        
         Color.black.setFill()
         context.fillEllipse(in: rect)
         


    }
        
    static let minSize: CGFloat = 0.5
    static let maxSize: CGFloat = 20.0
    
    func currentRadii() -> CGSize {
        let aspectRatio = self.bounds.size.width / self.bounds.size.height

        let radiusInPxH = 0.5 * self.bounds.width / (radius * ascensionRange)
        let radiusInPxV = 0.5 * self.bounds.width / (radius * declinationRange)
        let pixelRadii = CGPoint(x: radiusInPxH, y: radiusInPxV)
        
        for star in self.stars ?? [] {
            let mag = star.starData?.value.mag ?? 0.0
            let dotSize = CGFloat(StarMapView.vegaSize * magnification / exp(mag * rootValue))
//            xcLog.debug("F(\(mag) = \(dotSize))")
            let relativePosition = pixelPosition(for: star.starPoint, radii: pixelRadii, dotSize: dotSize)
            let rect = CGRect(origin: relativePosition, size: CGSize(width: dotSize, height: dotSize))
            self.setStarColor(for: star)
