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An Optical Reflector System for the CANGAROO-II Telescope

Akiko Kawachi
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Abstract

We have developed light and durable mirrors made of CFRP (Carbon Fiber Reinforced Plastics) laminates for the reflector of the new CANGAROO-II 7 m telescope. The reflector has a parabolic shape (F/1.1) with a 30 m^2 effective area which consists of 60 small spherical mirrors. The attitude of each mirror can be remotely adjusted by stepping motors. After the first adjustment work, the re ector offers a point image of about 0.14 degree (FWHM) on the optic axis. The telescope has been in operation since May 1999 with an energy threshold of ~ 300 GeV.

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Akiko Kawachi. 1999-11-30. An Optical Reflector System for the CANGAROO-II Telescope. https://doi.org/10.1063/1.1291399

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