28 Nov 2001




This image shows the almost full moon. It's made out of 6 ccd images, in primairy focus of my telescope. The much to bright moonlight was dimmed by a green filter, the ccd camera would otherwise completly saturate. The images were made between 19:17 and 20:00 UT, with exposuretimes between 0.15 and 0.20 s.

The most pronouncing feature is the crater Tycho in the lower part of the image. This impact crater, and it's surroundings, are much brighter than most parts of the Moon. Tycho is a young crater, probable some tens of million years. Young craters are recognized by there bright areas. These bright areas will darken, by erosional processes, in time. Bright streaks, called rays, are also very clear. They radiate away from Tycho. Rays are caused by material, thrown away after the impact of a comet or asteroid that created the crater.