Very nice. Like the way you have the milky way's axis lined up with the center of the lenses field of view curve.
I just took delivery of a 14 f28 Samyang. Not a fish-eye but I'm anxious to try it out.
What's your setup, exposure time?
I'm also considering the 14mm Samyang... it seems to be a very good lens.
As I said, it's a mix of two shots, one with ISO 800 and other with ISO 1600.
5D3, Sigma 15mm fisheye @ f/2.8, 15s