Astronomical telescope images Craters Davy and Palisa
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Davy and Palisa craters, are located on the eastern edge of the Mare Nubium on the Moon, on the smooth plateau, separated by high regions starting nearby.
Davy (35 km), is a circular crater with terraced inner edges, but also partly flooded by lava. The floor have elevations which are circular, meaning that these are terraces which were not filled by lava, because are higher than Mare Nubium.
Davy has many other small satellite craters surrounding it, but is a small crater compared with one of its satellite craters, namely Davy Y (70 km), which is several times the size. However, in my opinion, Davy Y, it’s not a crater, but rather a usual region of Mare Nubium, which is framed by a mountain chain, whose resemblance I can not find it to be the edge of a crater, because it has not circular a form, but having a square shape. It‘s possible that Davy Y to be actually composed of several smaller craters, which were covered by the Nubium molten magma plateau. The margins were submerged in lava, leaving uncovered only the highest peaks. I say this because to the south of Palisa, in the north of Davy Y, the edge enters inward.
As an interesting feature of Davy Y on this floor there is a very small chain of craters, 22 in number, starting at the center of Davy Y to northwest and beyond its border, and which stops on the edge of Davy G (16 km). This chain called Catena Davy, I notice that it has two size categories of small craters: main crater chain is composed of small craters and between “links” are scattered along several larger ones. Chain from end to end, is about 40 km.
Another satellite crater of Davy, is Davy A (15 km), located over the south-east wall.
Palisa (33 km), is a horseshoe-shaped crater, blending with Davy Y to the south. It does not have central peaks, only some very small craters on the floor. A bigger one is on the floor on the south, called Palisa P (5 km).
Moon age: 7 days
Stage: 51% (0% = New, 100% = Full)
Distance: 384.488 km
Optics: Celestron C8-Newtonian telescope, 20mm Plössl, 2x barlow
Mount: CG5 (EQ5)
Camera: Sony CX130
Filter: no
Date: 29/04/2012
Location: Baia Mare, Romania
Processing: video captures in Splash Player, FastStone Image Viewer
2013-02-02 04:45:24
Source: http://lupuvictor.blogspot.com/2013/02/astronomical-telescope-images-craters.html
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