“I have no qualms in stating that the image in question is a “composite”.
However, two images were obtained in as rapid a succession as possible
from the same location at the same time. It would be better to have two cameras and take the shots truly simultaneously, but I can’t afford that luxury. As many astrophotographers know, the stars move and the land doesn’t. Today’s modern color digital cameras and fast lenses ALMOST allow a photographer to get outstanding depth in the sky with an untracked mount and a very short exposure. Almost, but not quite. They also allow existing light imaging of the land under the night sky, but with a fairly long exposure (minutes). By placing the camera on a tracking mount for the sky, then repositioning the camera for the land and turning tracking off and making a much longer exposure to get more signal, both land and sky can be depicted without star trails or blurring of the land. The whole process takes about 5-10 minutes in the field. While purists will consider any type of composite “faked”, and a certain amount of “hand work” is necessary to make the two images blend properly, I make no apologies for this method whatsoever. The method overcomes the limits of the technology to get a result that depicts the real world. Nor do I imply that the image is what the eye sees, it is what the camera sees, obviously, but it depicts the scene in a manner that extends the human sense of sight without giving wrong information or a misleading idea of what the place is like. I believe the image communicates the spirit of the place and the night. As an artist, I can hope to do no better.”

Vamos, que viene a decir que es una composición de dos fotografías.