Due to technical problems on the CERN SSO system, logging in is currently failing intermittently.
July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Construction of a Schwarzschild-Couder telescope as a candidate for the Cherenkov Telescope Array: Implementation of the optical system

Aug 1, 2015, 3:30 PM
Mississippi Foyer (World Forum)

Mississippi Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 83
Poster contribution GA-IN Poster 2 GA


Mr Andriy Petrashyk (Columbia University)


We present the final optical system design of the prototype Schwarzschild-Couder telescope (pSCT), for which construction is scheduled to begin in early fall at the Fred Lawrence Whipple Observatory in southern Arizona, USA. The Schwarzschild-Couder telescope is a candidate for a future extension of the Cherenkov Telescope Array. This novel aplanatic optical system design is made of two aspheric mirrors. The primary mirror has 48 large (~1 m$^2$) mirror panels for an aperture of 9.6 m, while the secondary, made of 24 panels, has an aperture of 5.4 m. The resulting PSF is expected to be around 5 arcmin, which corresponds to a physical size of 8 mm on the focal plane. This represents a challenge for the fabrication of inexpensive aspheric mirror panels and for the precise alignment of the optical system as well as for the stability of the optical support structure. In this submission we introduce the design of the Schwarzschild-Couder optical system and describe the solutions adopted for the manufacturing of the mirror panels and their assembly on the optical support structure.
Registration number following "ICRC2015-I/" 1260
Collaboration CTA

Primary author


Dr Akira Okumura (Nagoya University) Mr Andriy Petrashyk (Columbia University) Dr Brian Humensky (Columbia University) Dr Daniel Nieto (Columbia University) Dr Manel Errando (Barnard College, Columbia University) Prof. Reshmi Mukherjee (Barnard College, Columbia University) Dr Valerie Connaughton (University of Alabama in Huntsville) Prof. Vladimir Vassiliev (UCLA)

Presentation materials

There are no materials yet.