Opposition surge from the retroreflective lunar soil brightens the area around Buzz Aldrin's shadow during Apollo 11 (photo by Neil Armstrong).. The opposition surge (sometimes known …

Apr 23, 1993 · The opposition effect, the sharp surge in brightness of an astronomical object observed near zero phase angle, which has been known for more than a century, has …

Theory of Reflectance and Emittance Spectroscopy - January 2012

Aug 9, 2019 · The opposition effect is typically observed at phase angles less than approximately 10° and was thought for most of the time since its initial discovery to result solely from the …

Dec 16, 2024 · The Opposition Effect derives its name from the fact that it significantly enhances the brightness of celestial bodies like the Moon and Mars when they are near the antisolar …

Apr 15, 2018 · The opposition surge refers to an addition sudden brightening at very small phase angles. The existence of such a surge was first noticed by Thomas Gehrels, in 1956, while …

The opposition surge (sometimes known as the opposition effect, opposition spike or Seeliger effect [1]) is the brightening of a rough surface, or an object with many particles, when …

Aug 21, 2006 · Two images of Saturn's A and B ring showcase the opposition effect, a brightness surge that is visible on Saturn's rings when the Sun is directly behind the spacecraft. This view …

where B 0 is the amplitude of the opposition effect, the h is the width of the opposition effect and g is the phase angle of the observation. This expression has been used to model the opposition …

The Opposition Effect of the Moon: The Contribution of Coherent Backscatter Bruce W. Hapke,* Robert M. Nelson, William D. Smythe The opposition effect, the sharp surge in brightness of …