Day 135 - Mysterious Balls

I'm looking at entering a photographic competition and my idea requires a full moon to make a night shot look like daylight.  This involves pictures will really long exposures, around 10-15mins.  Here's a test for the shot I want to get.  The sphere's aren't perfect but I know what I need to do now.  Checkout the star trails.  Thanks Wenz's for coming out at 10pm to take photo's in the freezing cold.  What a wife.

Technical:
Canon 7d camera
ISO 200
EF17-40 @ 17mm
f/10
647secs

Image Manipulation:
Curves Adjustment