Langrenus, again   Leave a comment


The comet-like craters are Messier, and Messier A
The largest crater is Langrenus
The mare is MARE FECUNDITATIS; the wrinkle ridges are Dorsa Mawson


I reprocessed the previous exposure by drizzling the stack, which 4x’d the pixel count. This made it softer, so the wavelet sharpening was more aggressive. This emphasized the drizzling grid, so I removed that with a gaussian blur, then a couple of unsharp masks. Overall, it was too dark, so I changed the levels to emphasize the floor of the crater and the wrinkle ridges in the mare. The upper portions of the image were completely overexposed, so I cropped them away.  Click for full size.


Posted December 11, 2006 by finkh in Uncategorized

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