a large flat mirror, usually on a tracker so that it can continuously reflect the sun’s raysonto a central receiver.A typical central receiver system requires hundreds of heliostats.
What is Heliostat?
Heliostat meaning A mirror that reflects solar rays onto a central receiver. A heliostat automatically adjusts its position to track daily or seasonal changes in the sun’s position. The arrangement of heliostats around a central receiver is also called a solar collector field.