One of six identical domes that make up a stellar interferometer array. The six 40-inch telescopes are arranged in a “Y” configuration with two on each arm.
Date: September 24, 2011
Location: Mount Wilson, California
Optics: Canon EF 17-40mm f/4L USM
Camera: Canon EOS 7D
Exposure: One single light frame of 1/100 second, f/11, ISO 400