365 Days of the Moon -- August 02, 2014

Petavius, Furnerius, and Rheita



      Haven't we been here before? Well... yes, several times in the past few months. But I like this area, so here is another look (upper middle) at
      floor-fractured Petavius with its strange radial rille. But for something new, look down and to the left of Petavius and see similar-sized
      Furnerius. This huge crater looks like a shallow dish because it lacks the illusion of vertical dimension created by terraced walls and a central
      peak like seen in Petavius. I can't find a specific geological epoch for Furnerius, but it may well be one of the most ancient large craters on the
      Moon's near side highlands. The eroded walls and the fact that the central peak has been covered up by infalling debris indicate Furnerius was
      probably there before the Late Heavy Bombardment that created the Moon's surviving great basins nearly four billion years ago. It is old indeed.

Image taken at the Cassegrain focus of Celestron 11 Edge HD with a QHY-5L camera.


Image and content copyright Robert Reeves 2014


Use the browser BACK button to return to the Index page