This is a great method for sharpening. Only discovered this recently myself. Previously my attempts at sharpening were rather messy! :)

Yup - mine were too... This seems to do the business....

as ever with sharpening the radius is critical and depends on the detail and resolution of the image. 10 is a bit strong but will sharpen coarser detail. Better is 6-8 and then do it again at 1-2. You must take the stars out as they will over sharpen and ruin it.

Dennis