"Moonrise" is also one of my favorite Ansel Adams shots, and apparently his own favorite, and I also recognized the reference immediately. Really nice shot.
Here is the story of Ansel Adams' version:
He just had time for one negative, and couldn't find his light meter!
I can heartily recommend "Examples: The Making of 40 Photographs", Ansel Adams, which has the story of this shot (as above) and 39 others, in some details.