The header image was made from a photo I took of the Point Bonita Lighthouse at the entrance to the Golden Gate Strait. It was heavily photo-shopped to remove the foot traffic, clear out the fog, and add the lens flare.
The website/blog theme is the Twenty Ten theme from WordPress (in case you missed their own notice). I tweaked the CSS and incorporated some ideas from the minimalist styles at plaintxt.org. I wanted a theme that looked like with Computer Modern font but didn’t find anything that I could use without more work than it was worth to me.