Nice shots. I noticed what looks like some pretty good dust on the sensor or on your lenses. Might want to see about getting that cleaned. It really detracts from otherwise neat images.
Finally had a chance to take a close look at my sensor under good light. Looks like I will be researching the best method for cleaning CMOS sensors! I used a blower to try and get some of the particles off, but it looks like they are stuck on pretty tight.