astroavani Posted April 11, 2016 Share Posted April 11, 2016 Finally Lunar 99 Although the picture has not yet reached a level that pleased me is the first record I try to make the famous volcanic complex INA. I believe that if the seeing had better (I estimated at 3/5) could have achieved a better result. There were two pictures on the same day almost 24 hours interval that allow poorly realize the famous caldera. Below two extensions of attached pictures and two 3D projections from QuickMap. Ina is a peculiar sharp-edged depression on top of a low rise. Ever since it was sighted by Apollo astronauts it has been thought to be some sort of volcanic manifestation. In 2006,Pete Schultz and colleagues proposed that it must be unusually young because its delicate details would have been toppled by normal small scale impact if it were billions of years old. This was exciting because it would be evidence that the Moon is not completely dead. Now comes a report from Mark Robinson and the LRO camera team that Ina is perhaps as old as nearby mare material. Their results are based on crater counting on images from the LRO Narrow Angle Camera images, which have ten times better resolution than previous Apollo images. There are two different units within Ina - smooth and general flat material that surprisingly is higher than than the rougher unit. The smooth unit has as many tiny impact craters as surrounding mare lavas. There are fewer craters on the rougher terrain and it is younger than the smooth material, but still much older than Schultz thought with lower resolution images. No one knows for sure what caused Ina and its two terrains. The sharp edges and roundish outlines of the smooth plateaus are clues, but their interpretation is uncertain. Source: LPOD - Charles Wood Adaptation: Avani Avaní Soareshttp://www.astrobin.com/full/244706/0/?real&mod 9 Link to comment Share on other sites More sharing options...
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