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Tuesday, 18 November 2014

The largest crater on the lunar south. Clavius crater Registax Images.

18 frames, in Registax.
419 frames, in Registax.
252 frames, in Registax.
80 frames, in Registax.
215 frames, in Registax.
1 frame, in Registax.

Porter (52 km), Rutherfurd (48 km), Blancanus (105 km), Maginus (163 km) and Clavius. These are craters from these images. Some are in the shade, others partially, and others visible in all their splendor.

Clavius (225 km) crater is the most notable. I was not able but only now to notice its features in more detail. We can see its floor and inner southern edge more clearly on this phase of the moon.

Clavius crater can not be detected in any way with the naked eye but only through binoculars or a astronomical telescope, because it has no high albedo, nor the rays of the impact that produced it, even though its diameter is very large.

On its floor, observe famous craters in an arc shape that characterizes it. This chain is puzzling in my opinion. It is clear that there is a close link between them, all from the same body that disintegrated before impacting the lunar soil. But my question is, until which crater extends this arc? If we listed from the smaller up to the largest, they are: Clavius J (12 km), N (13 km), C (21 km), D (28 km), and Rutherfurd, the largest, located on the edge of of Clavius.

But isn't it possible that in this chain to be one more crater, and greater than Rutherfurd, one which is located outside of Clavius, which is called Gruemberger? It's very unlikely, because it does not follow the direction of the arc of craters, although it seems, in these pictures, it would end the series of craters. Besides, Gruemberger (94 km) is much older, with a blunt edge but the arc craters have sharp edges well defined.

Another problem would be is why these craters on the floor of Clavius, are arched? Is it possible that the large body from which these craters have formed, may have changed its direction when it decomposed before impact? How can this be?

I think of another answer of the problem. Is it possible that this arc of craters may have occurred from another cause? Maybe is not from a body in space, but right from the Moon. Maybe, just maybe, after another more powerful impact formed a crater somewhere on the surroundings, and the remains excavated during the collision with that body, were shattered at a great height and were returned to the lunar soil, as an arc shape. It would be the most plausible explanation.

Which is the surrounding crater, I do not know, but certainly must be new, in the same period of the arc of craters.

Moon Age: 9.05 days
Phase: 70.5% (0% = New, 100% = Full)
Distance: 399.221 km

Moon Age: 9.05 days
Phase: 70.5% (0% = New, 100% = Full)
Distance: 399.221 km
- See more at:
Optics (telescope or lenses): Celestron C8-Newtonian telescope, eyepiece 20mm Plossl, 2x barlow
Mount: CG5 (EQ5)
Camera: Sony CX130
Filter: no
Date: 10/03/2014
Location: Baia Mare, Romania
Processing: Registax,  FastStone Image Viewer


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