This is a panorama taken at close distance from the tree. The light in front of the trunk is my head flashlight from inside the trunk cavity.
Canon EOS 550D, 3/1/2012 22:52 - 23:06, Shutter Speed 20 sec x 24 shots panorama, Aperture Value 4.0, ISO 800, Lens Canon EF15mm f/2.8 Fisheye, Focal Length 15.0 mm