Shadows Pro is a software package for designing sundials and astrolabes, developed by a French amateur astronomer François Blateyron. Shadows allows you to easily create a sundial customized for your location and then to build it thanks to printouts to scale. Shadows is free in its base level. It is used by thousands of users around the world. Discover the world of sundials on this web site through educational pages and photo galleries.
Features :

Planispheric astrolabe, universal astrolabe
Vertical declining analemmatic sundial
Bifilar sundials
Drawing of azimuth and altitude lines on the sundial
Sidereal hours, unequal hours
Solar graph (azimuth-altitude) with horizon mask
Colored background outside solstice arcs
Export of drawing layout in DXF (AutoCAD)
Export of animations in AVI
Tool for the calculation of sundial parameters from a photo
Efficiency graph of a solar pannel

Plane sundials with polar style (horizontal, vertical declining, equatorial, polar, meridian)
Sundial drawn to scale 1, of any size and any orientation or reclination
Compatible with any location on Earth, in northern or southern hemisphere (5100 locations installed)
Style drawn to scale 1