SST-GATE telescope: An innovative dual-mirror prototype for the Cherenkov Telescope Array

Delphine Dumas, Jean Michel Huet, Jean Laurent Dournaux, Philippe Laporte, Jean Philippe Amans, Gilles Fasola, Andreas Zech, Cameron Rulten, Hélène Sol, Simon Blake, Jurgen Schmoll

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations


The Observatoire de Paris is involved in the Cherenkov Telescope Array (CTA) project by designing and constructing on the site of Meudon a Small Size Telescope prototype, named SST-GATE, in collaboration with the CHEC team (Compact High Energy Camera) which is providing the camera. The telescope structure is based on the Schwarzschild- Couder optical design which has never been adopted before in the design of a ground-based telescope. This concept allows a larger field of view and cheaper and smaller telescope and camera design with improved performance compared to the Davies-Cotton design traditionally used in very high energy gamma-ray telescopes. The SST-GATE telescope has been designed with the prime objectives of being light, versatile and simple to assemble with a minimal maintenance cost. This papers aims at reviewing the SST-GATE telescope structure from mechanics to optics along with the control command architecture; several innovative developments implemented within the design are discussed. Updates of the project status and perspectives are made.

Original languageEnglish (US)
Title of host publicationGround-Based and Airborne Telescopes V
EditorsHelen J. Hall, Larry M. Stepp, Roberto Gilmozzi
ISBN (Electronic)9780819496133
StatePublished - Jan 1 2014
EventGround-Based and Airborne Telescopes V - Montreal, Canada
Duration: Jun 22 2014Jun 27 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherGround-Based and Airborne Telescopes V


  • CTA
  • Cherenkov
  • Schwarzschild-Couder
  • Small Size Telescope
  • dualmirror design
  • gamma-ray astronomy
  • telescope prototyping


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