As someone who shoots the moon frequently, and has for several years, I feel I can say with confidence that there is no way that is a single-exposure shot. If the previous comments including an explanation of the exposure are correct, then this is definitely a composite shot of two exposures...one of the moon in isolation, and one of the landscape. I think that can be proven as well.
First, some of the soft stuff. Even with an 800mm lens, I don't believe it would be possible to get this particular perspective right. For one, even at a narrower aperture like f/11 (which is unlikely, given the brightness of the moon, its rate of motion across the sky, etc....indicating the f/2.8 aperture would have had to have been used), the DOF on an 800mm f/2.8 lens is going to be really, really thin...I don't see any logical way one could expose the scene THAT unbelievably sharp with the infinite depth of field that would be necessary to expose the moon with such stupendous clarity without blurring the foreground to some degree. Second, I've shot the moon plenty with 400mm, and I don't think that its ever been large enough in the frame to indicate that an 800mm lens would produce a nearly frame-filling image, especially with that amount of sharpness and clarity (accounting for camera shake, optical aberrations at f/2.8, even factoring in the
quadruple mag. for double focal length rule). The fact that its all super crisp tweaks my "Fishy!" sensor just a bit too much.
What really seals the coffin shut, though, is the blatant oversight of the background sky. There are clearly visible clouds near the pinkish horizon that are NOT visible in FRONT of the moon. These clouds are even mentioned in the narrative! That tripped my "Bogus!!" sensor hard. The way the photographer wrote his little narrative, he certainly made it sound like the photo was a single-shot composition that literally took him a lifetime to achieve (emphasis added):
The golden sphere slowly rose in front of me. I was totally stunned. I couldn't believe it. So connected to this lunar giant that I was trembling. Such an impact on my life. I pressed the shutter, a feeling I'll never forget. The moon, tree, and earth.
The mysterious white-knuckling lens is never actually identified (and an 800mm f/2.8 lens, if it exists, would probably need a small CRANE to mount onto the largest, sturdiest mount known in all the lore of photography, no amount of single-handed white-knuckling would move such a monstrosity). The details are overlooked. The whole narrative and the concept in generally really tweak me the wrong way. I'm not really sure what the photographer is trying to do here, however it really seems like he is purposefully, but badly, trying to lie to his potential (and sadly naive) customers for this shot that SCREAMS:
FAAAAKE!!