An overview on mirrors for Cherenkov telescopes manufactured by glass cold-shaping technology

Rodolfo Canestrari; Giorgia Sironi

doi:10.1117/12.2191429

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4 September 2015 An overview on mirrors for Cherenkov telescopes manufactured by glass cold-shaping technology

Rodolfo Canestrari; Giorgia Sironi

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Proceedings Volume 9603, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VII; 960302 (2015) https://doi.org/10.1117/12.2191429
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The cold glass-slumping technique is a low cost processing developed at INAF-Osservatorio Astronomico di Brera for the manufacturing of mirrors for Cherenkov telescopes. This technology is based on the shaping of thin glass foils by means of bending at room temperature. The glass foils are thus assembled into a sandwich structure for retaining the imposed shape by the use of a honeycomb core. The mirrors so manufactured employ commercial off-the-shelf materials thus allowing a competitive cost and production time. They show very low weight, rigidity and environmental robustness. In this contribution we give an overview on the most recent results achieved from the adoption of the cold-shaping technology to different projects of Cherenkov telescopes. We show the variety of optical shapes implemented ranging from those spherical with long radius of curvature up to the most curved free form ones.

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Rodolfo Canestrari and Giorgia Sironi "An overview on mirrors for Cherenkov telescopes manufactured by glass cold-shaping technology", Proc. SPIE 9603, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VII, 960302 (4 September 2015); https://doi.org/10.1117/12.2191429

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