Helios Sun Position Calculator is a geeky and powerful iPhone app graphically predicts the path of the sun from dusk to dawn, on any given day, in any given place. Utilizing algorithms created by the National Renewable Energy Laboratory and The National Geophysical Data Center to predict the sun’s movement (including nutation offsets) and magnetic declination, Helios is accurate to a tiny fraction of a degree. Just set a location, set a date, and you can easily move between dates, times and locations.
A perfect tool for Cinematographers and Stills Photographers working in natural light, the Helios iPhone app is essential to anyone who needs to plan a day around the constantly changing character of sunlight. Gaffers, Grips, Location Managers, Production Designers and First Assistant Directors will already be aware of the value of this information. Other professionals, from Architects and Surveyors to Electricians and Landscape Gardeners can now predict sun exposure in the field, without the need for complex tables or graphs.
Here is a video demo of the Helios app on the iPhone
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