An Optical Reflector System for the CANGAROO-II Telescope
Astrophysics
2015-06-24 v1
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.
Cite
@article{arxiv.astro-ph/9911509,
title = {An Optical Reflector System for the CANGAROO-II Telescope},
author = {Akiko Kawachi},
journal= {arXiv preprint arXiv:astro-ph/9911509},
year = {2015}
}
Comments
5 pages, 2 figures, to appear in the proceedings of the GeV-TeV Gamma-Ray Astrophysics Workshop, "Towards a Major Atmospheric Cherenkov Detector VI" (Snowbird, Utah, August 13-16, 1999)