image by Peter and Christian Wellmann, Germany

A great new image gives an opportunity to examine even a familiar feature with a fresh perspective. And that is exactly the result of Christian's and Peter's view of the Apennines and western Vaporum under grazing sunrise illumination. This is a gorgeous image, with the abundance of small detail that makes accurate drawing of the lunar surface impossible. The Apennines are full of asperities, little hills and mountains enmeshed in a solid matrix of finer rocks. Small fresh craters reveal themselves by their bright crescent-shaped rims and adjacent circles of darkness. More amazing to me are the volcanic pond remnants on Mare Vaporum. A large one that I had never noticed before (but is visible on LO IV) is at the bottom right of the image. Its walls are probably made of volcanic spatter that once contained a liquid pond of lava. Similar ponding is indicated along the western edge of Sinus Fidei, whose lavas probably came from the short and sinuous Conon Rille. A more mysterious feature is just visible on the floor of the lava-covered depression just below the center of the image. There are 3 to 5 short parallel ridges, perhaps made of closely spaced hills of uncertain origin - lunar plowing?

Chuck Wood

Technical Details
04.13.2008. Meade 12” R-optics + Celestron apochromatic 2x Barlow at f = 6m + Imaging Source DMK 41 camera. Video processed with Registax 4 multipoint. Seeing was good, 7/10.

Related Links
Rükl plates 22 & 33


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