Aerial View of Cerro Tololo Inter-American Observatory.

Drone footage showing a variety of telescopes at the Cerro Tololo Inter-American Observatory, a Program of NSF's NOIRLab in Chile. The most prominent is the Víctor M. Blanco 4-meter telescope which can be seen through its open observing slit with the Department of Energy built Dark Energy Camera (DECam) at the top of the telescope structure. Other telescopes that come into view include the Small and Moderate Aperture Research Telescope System (SMARTS) 1.5-meter telescope, the Curtis Schmidt telescope, the SMARTS 1.0-meter telescope, and the SMARTS 0.9-meter telescope.