Horizontoscope

Horizontoscope

A horizontoscope is a quick and easy tool to determine the true solar radiation on site. The horizonoscope measures the narrowing of the horizon over a point and uses a sun position diagram to calculate the exact duration of sunshine for any given day.

It consists of a plexiglass spherical cap with a flat bottom. To Einnorden the equipment and level up to, a compass and a are often circular level appropriate.

functionality

A diagram of the position of the sun with the geographical latitude of the respective point to be examined is inserted into the leveled and north-facing device. The surrounding buildings and trees are projected onto the reflective spherical cap . In this way, the diagram below shows the seasons and times at which shading or sun exposure occurs at this point.

application areas

Architecture and construction

Planned buildings can also be drawn in a sun position diagram, whereby the additional shadowing of the project can be determined at a point next to the building site. This method can also be used to determine the optimal position and inclination of awnings, blinds, awnings and canopies.

forestry

Since the growth of young trees depends very much on the received solar energy, the expected solar irradiation can be determined with the help of a horizontoscope, in order to then be able to select the right seedlings .

Human biometeorology

In human biometeorology , the device used to play a role in determining the SVF (Sky View Factor). Nowadays the devices have been replaced by special fish-eye lenses, with the help of which fish-eye photos can be taken with a camera. With suitable software on the computer it can be determined how big the horizon or obstacle is.