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An instrument in which a mirror is automatically moved so that it reflects sunlight in a constant direction. It is used with a pyrheliometer to make continuous measurements of solar radiation.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Astronomy) an astronomical instrument used to reflect the light of the sun in a constant direction
ˌhelioˈstatic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈhi li əˌstæt)

an instrument consisting of a mirror moved by clockwork, for reflecting the sun's rays in a fixed direction.
[1740–50; < New Latin heliostata. See helio-, -stat]
he`li•o•stat′ic, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


[ˈhiːlɪəʊstæt] Nheliostato m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
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References in periodicals archive ?
Payloads are usually solar panels, parabolic troughs, fresnel reflectors, lenses or the mirrors of a heliostat.
The AutoR Project (Autonomous Rim drive heliostat), created under the auspices of the German Federal Ministry for Economic Affairs and Energy, seeks to fulfil that promise by developing CSP technologies that significantly reduce the cost of heliostat fields.
There are four main types of solar concentrators: Fresnel concentrator [4,5], parabolic trough concentrator [6,7], tower heliostat [8, 9], and parabolic dish concentrator [10-12].
A siderostat is a variation on the heliostat, a flat mirror that reflects sunlight in a constant direction as Earth rotates.
The uniformly distributed mirrors are called heliostats. Each heliostat is oriented by a solar tracking system and reflects the sunlight precisely to the absorber.
The features included wind turbines, solar panels, a heliostat, and an open-loop geothermal heating and cooling system, resulting in a Gold LEED (Leadership in Energy and Environmental Design) building certification.
The final publication of his career on wind gust distribution analysis related to solar farm heliostat design was published shortly after his death.
Most recently, Sommers has worked as a senior automation engineer, including designing a large scale, dense wireless mesh network for a 100k autonomous heliostat, at Abengoa Solar.
Critical to each heliostat is a self-contained power supply that provides reliable power to each motor, while also supporting wireless connectivity throughout the network, delivering the critical data needed to support synchronous movement of all.
The plant was of interest owing to its size --it consisted of a field of 63 heliostat mirrors that automatically tracked the motion of the sun, reflecting incident radiation onto a huge parabolic reflector.
Here, daylight shines in through a massive glass atrium, and is enhanced by the use of a heliostat. One side of the lobby is further illuminated by PAR38 halogen accent lights, while the other side is lighted by a crystal chandelier as well as cove lighting and LED strips that have been integrated into a wooden wall.