cronevald.deviantart.com/art/The-Warp-18196079
This isn't really Dark Heresy fan art, but it's something that I did a few years back as part of personal project. It's part of a fan comic about an Inquisitor and an Eversor Assassin. This would be the view out of the windows while travelling on an Imperial battle ship.
A chapter from the comic can be found here:
cronevald.deviantart.com/gallery/#Imperial-Gothic
Unfortunately, it's the only chapter I ever finished as I was hired draw a few comics for the Black Library after it was finished and I didn't have time to do more. It's a bit dated as it predates the Inquisitor game, and the background and imagery has been expanded a bit since it was done.
Hope you enjoy,
Daniel