|2 frames at 100% best quality in Registax.|
Eratosthenes (58 km), is a crater ending Apeninnus mountains, situated between Sinus Aestuum (bottom in photo) and Mare Imbrium (top in photo), on the central area of the Moon.
In this picture, we see the southern Montes Apeninnus that suddenly narrows more and more to their end, and give the impression of "coiled" around Eratosthenes. Montes Apenninus appear to be interrupted by two parallel valleys, two grooves in the mountains. At their south, is a mountain called Mons Wolff.
At the bottom of the image, most small craters are satellite craters of Marco Polo (28x21 km).
Note the central mountains on the floor of Eratosthenes forming the illusion of a "V" letter, and beautiful terraced inner walls. This crater, even if smaller, resembles in features with Copernicus which is not far, to the southwest.
This is a video processing in Registax image from several frames, merged to form a single image.
Age of the Moon: 8 days
Phase: 62% (0% = New, 100% = full)
Distance: 379.486 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