An iPhone/iPod Touch application that graphically predicts the path of the sun from dawn to dusk, on any given day, in any given place.
Designed as an aid to Cinematographers and Stills Photographers working in natural light, Helios 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.
Helios has an internal database of over 30,000 locations around the world, providing longitude, latitude, timezone and daylight savings information. There is an ability to save favorite locations and add the current location from GPS data (where a signal is available). Core functionality is not reliant on cellphone reception. Likewise Helios will work on the iPod Touch, though you have to select a nearest location from the database or manually enter the GPS coordinates.
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.
If you have any questions, notice any bugs, or have any feature requests, please don't hesitate to email us.
The beautiful Helios logo was created by Nathan Selikoff