The Cornell Astronomical Society (CAS) hosts public open house nights at the Fuertes Observatory on North Campus every Friday from 8pm to midnight. Everyone is welcome to come view the Moon, planets, galaxies, nebulae, star clusters, and more through the 107-year-old observatory’s historic telescopes.

Even if it is cloudy, CAS will still open Fuertes for tours of the building and telescopes, including of the flagship 12-inch Irving Porter Church Memorial Refractor. The observatory is also home to historic Civil Engineering equipment used in the 19th century for geodesy and timekeeping, which is on display in a museum occupying the east wing of the building.

Attendance is always free and no registration is required.