Looking at the website you linked, I dunno. I get the impression that HDR is for reasonable dynamic range differences, to pick up detail in shadow areas or in an underexposed highlight. I'm looking at 12 f-stops difference between the moon and the foreground... that's more than 4,000 times brighter.

One other difficulty would be that the moon simply was not in the frame when the photo was taken. I would have to zoom out to widest angle and still cut out part of the foreground if I wanted the moon in the frame. The shot would be almost all sky with just a sliver of lake showing because the moon was actually much more overhead than it appears in the picture.

tanstaafl.