Opposition Effect

The opposition effect is sometimes confused with the heilgenschein but no water is required for this effect which occurs in the driest places in the solar system.

The effect varies depending on the viewpoint.

Opposition effect from different viewpoints Opposition effect on dry surfaces

Rough dry surfaces give the best results.

Different kinds of vegetation can also show the effect.

Opposition effect on vegetation

See Atmospheric Optics for a diagram showing how shadow hiding produces this effect.

Other Glows Topics