Large-Sized Telescope Prototype (IMAGE) Cherenkov Telescope Array Caption The prototype, named LST-1, is intended to become the first of four LSTs on the north site of the CTA Observatory, which is located on the existing site of the Instituto de Astrofisica de Canarias' (IAC's) Observatorio del Roque de los Muchachos on the island of La Palma. The plan for the site also includes 15 Medium-Sized Telescopes (MSTs). Credit Ivan Jimenez, IAC Usage Restrictions With Credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.