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Wednesday, 5 October 2011

Crater Proclus and Palus Somni in light-telescope images

Photographer: Victor Lupu
Optics: Celestron C8-Newtonian telescope, plossl 20mm, 2x Barlow
Mount: CG5 (EQ5)
Device: Sony CX105
Filter: No
Date: 12/05/2011
Location: Baia Mare, Romania
Processing: FastStone, video captures

         Proclus (28 km), is a young impact crater located to the west of Mare Crisium, on the eastern shore of the Palus Somni (143 km). It lies south of Macrobius crater, 64 km, and northwest of the flooded crater by lava, Yerkes. Between Proclus and Yerkes, on the sea, are Lavinium and Olivium.

Proclus's edge is distinct polygonal shaped, the shape of a pentagon, and is not very high compared to surrounding terrain. This crater has a high albedo, the second after Aristarchus. The floor is uneven, with some small elevation.

The crater has a ray system that extends over a distance of 600 kilometers, and has an asymmetrical shape, with the largest rays in the northwest and northeast. Southwest is an arc caused by the impact. These features suggest an oblique impact.

Palus Somni, is an area of land which is unevenly along the northeastern edge of Mare Tranquillitatis and Sinus Concordiae.


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