Heliograph (disambiguation) explained

Heliograph may refer to:

• Heliograph, a device used for optical signalling
• Sunshine recorder, also known as a heliograph, a device that records the amount of sunlight at a given location
• Solar telescope, also known as a heliograph or photoheliograph, a telescope especially adapted for viewing the surface of the Sun
• Heliography, the photographic process used to make the earliest known permanent photograph from nature
• Heliographic coordinate system, a type of coordinate system used to identify locations on the Sun's surface