  Composite mirrors for gamma-ray astronomy have been developed to fulfill the
specifications required for the next generation of Cherenkov telescopes
represented by CTA (Cherenkov Telescope Array). In addition to the basic
requirements on focus and reflection efficiency, the mirrors have to be stiff,
lightweight, durable and cost efficient. In this paper, the technology
developed to produce such mirrors is described, as well as some tests that have
been performed to validate them. It is shown that these mirrors comply with the
needs of CTA, making them good candidates for use on a significant part of the
array.
