We have seen these lights twice. the second time we were able to get a picture before they totally faded. the interplay of light between the two spheres blended into a long line. it was excellent to watch. it lasted quite a long time for us as well. this was the best picture out of the lot we took.
we have since upgraded our equipment and hope to get a better set of shots next time. hope my attempt to link works.


IMAGE ( [link to imageshack.us] )