|Aristarchus crater. 1246 frames at 90% high quality in Registax|
Aristarchus and Herodotus: two craters of about the same size but very different from each other, because the first is deep, and the second is flooded by lava.
Aristarchus (40 km) crater with a very intense albedo, especially in contrast to the smooth, dark plateau with fewer craters, called Oceanus Procellarum. For this reason, the speculation of many kinds appeared: one is that the intensely albedo, is radioactive waste and that there exist, or there was, a human or alien base. It has even been said that the blue-green color of this crater, would increase greatly in intensity in some periods (the images in this article are processed black / white) and so from time to time, would produce radioactive waste leak.
Below is the Moon in the same evening. The Moon lit by the Sun 90%. Images are processed in Registax of a video from which were used 1246 frames, merged to form a single image.
Age of the Moon: 17 days
Phase: 90% (0% = New, 100% = Full)
Distance: 399796 km
Optics: Celestron C8-Newtonian telescope, 20mm Plossl, 2x Barlow
Mount: CG5 (EQ5)
Camera: Sony CX130
Location: Baia Mare, Romania
Processing: Registax, FastStone Image Viewer
Picture below: Moon in the same night.