M13 with DSLR

I attempted to capture the M13 Hercules Cluster last night after changing my method of taking flat frames. I now use a white panel at the end of the dog house as my flat capture point. It seemed to work much better and faster than the 't-shirt' method I was using before.

Anyway. Here's my attempt. 4 each 2 minute images ISO 1600 Canon 350d un-modified.