|A photo that has a lot of potential.
I agree with yospiff that the star trails are not long enough to be really effective. Overall, I think the composition in frame is good. However, when I look at this photo, I am not sure what the subject is supposed to be.
The title would lead me to believe that the large tree around center frame is the subject. However, it's only a silhouette, and therefore is an extraneous background element. IMHO, what would have really helped this photo is to light that foreground tree... Fairly simple to do with such a long exposure. Hit it with a strobe, shine a flashlight on it and paint it with light, use a worklight; whatever is handy.
Photos like this bother me because they have tons of potential, but a few glaring issues caused voters to score it low. With a few minor alterations, this could have scored near the top of the pack.
From the Discussion Composition, Technicals, asthetics Etc thread