LSST Lens Installation

The L3 lens was successfully installed on the LSST Camera cryostat at Rubin Observatory. The L3 lens, just under 19” in diameter and juts under 2.5” thick, is the smallest of the 3 lenses in the camera and serves as the vacuum window to the cryostat where the sensors and readout electronics are housed. This is the first lens to be installed in its final location on the camera, and enables the team to move forward towards adding more components including the camera body, the filter exchange system, the shutter and the last 2 lenses.