The double Crater Messier

What kind of impact caused this highlight of the moon is still under debate. Either a double impactor or a single rebounding impactor are discussed. Because of the ejecta-ray (to the upper right in this image) it seems to be a safe assumption that the impact was very oblique.

Telescope:	16cm Newton reflector, made and owned by Alois Ortner.
Camera	Nikon Coolpix 950 digital camera
Date:	2001-11--03

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All images © Philipp Salzgeber