My, uh, night job is astronomy. Here's a photo of DDOTI, the "Deca-Degree Optical Transient Imager", at the Observatorio Astronómico Nacional in Baja California. DDOTI has six 11-inch f/2.2 prime-focus Celestron RASA telescopes each with a 48 x 36 mm CCD with 8k x 6k pixels, although because of vignetting we only use a 6k x 6k pixel crop. The six telescopes together cover 10 x 7 degrees in the sky. We're using them to search for the counterparts of gravitational-wave events, like GW170817 .