Can I make a user pic out of this image?

[nancylebov]

That fancy solar image I posted recently strikes me as something I'd like as a user pic (after years and the acquisition of lj by dubious people), but lj doesn't like urls that don't begin with www. Is there some way to make it work?

Also, while it doesn't look bad as a square, I'd rather keep the original proportions. Is there someway to either have it as a rectangle or add black (maybe black with a narrow gold stripe) to fill in the square?