this looks a hell of a lot like [link] development drawing that were done for Star Wars: revenge of the sith I'd be careful with this that no-one at Lucas Film spots it and flags it as copy right theft friend
Looks like an official design study for RotS!!! I love these pics! Very good. And there are so many classes of Star Destroyers out there. The really kick-butt one is from the "dark empire comics". That thing was eight imes larger than the giant one from episode VI. But the venator is my favourite.