1. Sun control diagrams

The solar diagrams used in this article are based on the equidistant spherical projection (see the different projections shown in , fig. 6, p. 7). The choice of this projection is dictated by its compatibility with images obtained with a fisheye lens (cf. , fig. 16, p. 14).

As we saw earlier, the solar diagram can be used to determine and represent the sun's positions, defined by the pair (azimuth, angular height), at any given moment at a given latitude. But it can also...