365 Days of the Moon -- August 26, 2014

Theophilus sunset



      For day 142 of 365 Days of the Moon I will show as bad of a Moon picture as will ever post here. This image was taken one blustery night 
      on December 29, 2007 not long after I got my DMK-41 camera. The seeing was terrible, but I wanted some "seat time" with the new camera to 
      learn its operation, so I blasted away anyway. Though pixelated to the max by very necessary overprocessing, there are some features here 
      I find interesting.

      The dark shadowed crater at the lower right is Theophilus on the Moon's southeastern quadrant. The mountains casting the sunset shadow down 
      the middle of the image are the northern beginnings of the Altai Scarp, a cliff-like structure that is actually the outer impact ring of 
      the Nectaris Basin. But the most interesting thing in this photo is something you almost can't see. I love to find evidences of ancient 
      ruined craters that have no name on modern lunar charts. Let me help you find one. The largest crater on the upper left is Delambre. 
      Look just below Delambre...see the curved shadowy structure? Let your eye follow that curve down through the very squished-looking crater 
      Taylor, the continue the curve toward the right. Do you see evidence of the rim of an ancient obliterated crater? I think I do. I suspect 
      that almost four billion years ago this was a crater about 60 miles in diameter. Debris thrown from the explosion that created the 
      Nectaris Basin buried this old crater leaving only a hint of its former existence. That's my story and I'm sticking to it!

Image taken through a Celestron 8, 2.5X Powermate, and DMK-41 monochrome camera.


Image copyright Robert Reeves 2014


Use browser BACK button to return to Index page