The Gamma-ray Cherenkov Telescope, an end-to end Schwarzschild-Couder telescope prototype proposed for the Cherenkov Telescope Array

The GCT (Gamma-ray Cherenkov Telescope) is a dual-mirror prototype of Small-Sized- Telescopesproposed for the Cherenkov Telescope Array(CTA) and made by an Australian-Dutch-French-German-Indian-Japanese-UK-US consortium. The integration of this end-to-end telescopewas achieved in 2015. On-site tests and measurements of the first Cherenkov images on the night skybegan on November 2015. This contribution describes the telescopeand plans for the pre-production and a large scale production within CTA.