We start with a new document, I used 1024 x 768, because we need a lot of space.
Fill your layer with #4C4C4C
Now go to Filter > Render > Lens flare, use these setting:
Make sure you position the "small circle" in the left middle of the "big circle"(or just make sure it looks like mine)
Go to Filter > Sketch > Chrome, use these settings:
You should now have this (but only a bigger version):
You could leave it this way, or you can repeat the lens flare (not the chrome) to get this:
Click to enlarge
And that's it!
