Before revision: Shape A dewbow is centred on the antisolar point but as the dew is on a horizontal plane, the bow is not a circular arc, but often elliptical or an open arc shape in a parabola or hyperbola .
After revision: Shape A dewbow is centred on the antisolar point , but since the dew is on a horizontal plane, the bow is often an elliptical curve ofinstead of a circular arc a parabola or hyperbola .