Unwraping hemisphere, but how?

[Westbeam]

Hey

I made a model and a texture for a space station, but I can't unwrap the model properly. I tried to unwrap it like a sphere and cylinder, but it doesn't look like I want it:



I would describe the shape of the model as a "helmet"(it's empty inside), is there a good way to unwrap it right?

, Westbeam