Lunar Alps

Montes Apenninus or Lunar Alps. If you know where to look, Hadley Rille is faintly visible running approximately parallel to the mountain range along the eastern edge of Mare Imbrium. Hadley Rille is a V-shaped 400 meter deep gorge that averages about a kilometer and a half in width.

Canon 7D, 400/5.6L lens + 1.4X and 2X extenders.

Same image also used for Rupes Recta thread.

Yep, I see it. Apollo 15 is down there somewhere.

Nice shot!

This is incredible work with any optical tube but with stacked TCs on a 400mm lens, AMAZING!

I shot the Alpine Vally at over 2000mm on a steady night and managed to resolve some of the central rille. Wes Higgins has some really amazing work of this region (and so many more).

Great work Bill.

Bernoulli wrote in post #12074760
Yep, I see it. Apollo 15 is down there somewhere.

Nice shot!

Thanks, Rick. I like this cropped view with a bit of horizon showing because it gives the appearance of flying over the lunar surface and looking down as opposed to being down here and looking up there. Those poor folks down under have to look out there to see the moon.

Nighthound wrote in post #12075801
This is incredible work with any optical tube but with stacked TCs on a 400mm lens, AMAZING!

I shot the Alpine Vally at over 2000mm on a steady night and managed to resolve some of the central rille. Wes Higgins has some really amazing work of this region (and so many more).

Great work Bill.

Thanks for the wonderful compliment, Steve. I really do like this lens -- it is unbelievably sharp. I don't know if my lens is typical for the Canon 400 mm f/5.6L or if I just happened to get an exceptional one. I know one thing for certain -- the next owner of my lens will have to pry it loose from my cold dead fingers.

I thought that the viewing conditions were good, but not really exceptional and I just set up my tripod on my driveway without even anchoring it down nor allowing time for thermal stabilization of the optics. I am in the middle of the DFW metroplex with all of its light pollution and other "stuff".

My 7D is no slouch either. With its 18 MP resolution, it can take advantage of the lens sharpness and I have found Live View silent shooting Mode 1 to be indispensable for vibration free images.

Since you mentioned Apollo 15, here is a crop with a 400% enlargement inset showing the landing site.

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That's an unbelievable level of detail - astonishing!